The contractor will determine, and may consult with the contracting officer if necessary, if the information required for subcontractor performance retains its identify as CDI, thus necessitating flow-down of. Race Ignition CDI Box For ETON VIPER RXL50 RXL70 AXL50 TXL50 TXL90 DXL90. NEW VERSION 48mm Full racing ignition kit for the Aprilia RS125 Rotax 123 Engines. With a digital CDI (optional), the TuneBox software and interface, you will be able to get the maximum performance of your engine. Not sure how much difference. Number: 001-855-694-8763. Whatever ignition advance the tuner set was the advance right through the rev range. FIVE DIFFERENT ADVANCE CURVES - You can advance slowly to dial out pinging on high compression motors or bring the advance in quickly on quick revving motors or select a. Hand Starting (Armstrong Starter):. It is better to pull off the prop hub and timing plate to do this, but you don’t have to. NOTE: On the first. Control each cylinder's timing up to 10 degrees. The CDI's we tried was 95 Zrt800, 94 T-cat, 96 Zrt800, 93 T-cat, & 97 T-cat. Lets say you want to run your Storm at 9500 rpms instead of 8100. Silent-Hektik. To know where we are on the curve, we need to know how many people have the virus. Based on : PIC16f628 v6. Somewhere around 1. When knock is detected, software retards in proportion to knock intensity. CDI modules typically have a programmed advance curve. maximum 10degree. Advance curve is in EEPROM and is freely modifiable. Free shipping. Improved Timing Curves. The CDI is pre-programmed with 2 curves, which can be switched using the Handlebar switch. NOTE: Programmable features and data recovery features require programming kit sold below. If you do advance the timing you should run. My XT has 2 igntion pickups on the rotor and a centertapped pickup coil. eBay Motors: HONDA CT70 ATC70 SS50 Z50 XL70 CDI Electronic Ignition (item 120252327971 end time Dec-19-08 19:59:50 PST) I'm going to run one of the above soon and will do a full writeup after I do the conversion along with pictures. Advance rate is 2º/376 RPM. Results vary, depending on the machine and its aftermarket alterations. Clients are buying this part for performance: Great add-on with an aggressive timing curve and increased rev limiter. To the ignition timing, turn the switch to the (CW : Clock Wise). I have an 80cc Chinese two stroke engine on my bicycle and wish to experiment with changing the spark timing. Any part can fail. For the maximum advance point, the PIC will do a zero delay (for 36 deg. One is probably 5 degree BTDC idle timing, and the other is 32 degree full advance. Separate timing curve for each cylinder, eliminates detonation problems. the timing is actually advancing towards TDC as revs increase instead of retarding as i was expecting - can anyone comment on this ? does it sound like a cdi fault ? many thanks andy. "Usually the engines best performance is given when the ignition timing is advanced close to the point of detonation. Circular Polarized Light: Passing plane polarized light through a birefringent plate (in the z-direction) which splits the light into two plane-polarized beams oscillating along different axes (e. For instance, the Programmable 6AL-2 connects to a PC where the user can map out a timing curve for their application. There was no rev limiter in any of them. Curves analog PVL ignition with different stators: Curve`s 458115 – Stators. What's the best for power? I hear 97-98 come up a lot. Amusingly the curve has no units nor meaning and the box does not have any sort of timing curve built in. Registered User. The working is quite similar to the XT 600, just reverse two wires. Sparks timing key makes them run hotter than they already do. Our performance CDI module will give you the most bang for your buck. you can use the chinese cdi's, as long as you don't care about ignition curve, 99% of them have no curve at all, even though they have a pic of a curve on the cdi :) (careful with that ping eugene. while prices further down the curve are more affected by. This will change your entire timing curve by a set amount (if you advance it 2 degrees base, it will be 2 degrees more advanced throughout the entire curve). 4 or 5 pin. Improved Timing Curves. the rest of the job is to get some way to sense engine rpm and send the fire signal to the cdi circuit board according to the timing curve. Electronic ignitions. This timing change is in addition to changes made with the manual switch (section 8. I know a lot of people add 4 deg of timing to the entire curve, but with mu CDI I have the opportinuty to set the timing as I want. It also will eliminate the reverse rev limiter. Results vary, depending on the machine and its aftermarket alterations. maximum 10degree. CDI/Rev Kit (03-04). Ride at full throttle with our application-specific CDI box that raises the rev limiter by 1000 RPM. H model flywheels had centrifugal spark advance mechanisms. MSD PN# 4253. Change IGNITION CURVE Enter menu and move to Ignition Curve with pressing + or - and then press enter. CUSTOMERS SERVICE +33 (0) 9 73 56 82 24 Email contact. 3-speed models did not, running fixed timing instead. Mahoney's $100+ CDI unit is sophisticated enough to read engine load and set timing a accordingly. Also, on high hp motors, you reduce the area of the flywheel key when you put in an offset one, and you increase the possibility of shearing the key. Whereas DC input CDI units take their power supply from the motorcycle battery. It utilizes capacitive discharge and fires a series of multiple sparks that lasts for 20° of crankshaft rotation when the engine is running below 3,000 RPM. The DRSP-1 plugs into the Dyna FS ignition module to enable the use of the 4 pre-programmed ignition advance curves as well as make fuel adjustments. You can then work a 'retard' curve into your controller, referencing RPM or boost/MAP or any other factor you care to use. Not really any easy way of sourcing a cdi unit to just plug in and change the advance curve. In this paper, the fire computational fluid dynamics (CFD) code with an improved spray model has been used to simulate the spray and combustion processes of diesel with early and late injection timings. I assume its a case of getting the bike on the dyno and. Now you are in submenu for setting ignition curve. Well it's not fancy at all. Electronic ignitions. The box is typically an anodized blue with a sticker indicating some sort of curve. Traction Control Detection alert light. You can 'clean up' the trigger signal and give it a more definate step up to the trigger voltage and push the timing curve within marginal limits. An engine rev limiter is also incorporated to prevent over-revving. It may advance a little bit less as RPM increases but apparently not enough. there is a 2 stroke moped cdi i have used in the past, works awesome, has a real timing curve. MSD Ignition Timing Controls are designed so engines with locked out timing or crank triggers can take advantage of an ignition curve. The input to the CDI unit is derived from two sources of the alternator. Connect the stator connector to the ignition coil. The ignition system on your car has to work in perfect concert with the rest of the engine. MSD Explains Timing Adjustment on their E-Curve Digital Distributor By Lindsey Fisher August 14, 2012 Let’s be honest, setting the ignition timing on your car is not the most glorious project in the world but it’s very important if you want your vehicle to run right. This takes all of the mechanical variables out of the picture to produce exact ignition timing. (This will require some modificationson your ATV for this additional power. Connect the ignition switch (red connector) and, for ignitions with two ignition curves, the ignition curve selector switch (green connector). The power gain was awesome. Igniter, is an intelligent design of electronic circuit. This allows you to precisely program ignition timing for optimum engine performance. We set 9 curve for CDI,customers can choose the right curve according to actual condition, 9 curve can meet different users' engine performance needs; 2. When combustion occurs it does not take place instantly. ) Example: Exhaust system, air filter. Lighter than full size flywheel for quicker rev but still retains enough wieght for good torque. The PC6AL-2 uses the latest state of the art digital technology, and when used with the Procomp high performance coil, produces a spark gap current three times greater. We used multiple logistic regression with the above risk factors to examine how they interacted with log 10 PCT in a pairwise fashion. Performance CDI for the Suzuki LTZ250 increases the rev limit by 1,000 rpm over the stock rev limit. - NEW upgraded 16 ignition timing curves, tailored to your engine for best efficiency ! - Ignition timing curves digitally calculated on the fly by high-accuracy microcontroller - Protected under high-reliability epoxy resin - Embedded in a stylish red ABS plastic-injected case. By using this new and improved workflow, physicians are no longer interrupted while caring for a patient and can complete documentation gaps on their downtime. The unit retards in steps, a total of ten steps are possible. The ignition features a timing curve based on boost so you can map out a timing curve based on boost pressure. Kray-Z; Offline; the timing curve will likely be different, mechanical units compared to the electronic. MSD provides 10 different timing curves from mild to wild that you can choose with the twist of a dial. In addition, this unit offers a re-mapped timing curve which yields a noticeable increase to horsepower and torque over the stock CDI This CDI box is a direct plug in replacement CDI. Below is a graph showing the timing curve difference. The Classic CDI is a CDI unit that can be used with the factory timing curve set in place. This is a factory replacement ignition and work with all digital dashes and 4 wheel drive. I don't believe Mr. ECU & CDI Software. As if this wasn't frustrating. RPM or analog signal — Selectable. Pickup position can be freely set from 0 to 360°. BUILT-IN STATIC TIMING LIGHT- An LED light built into the Dyna 2000 ignition module allows you to monitor the crank trigger signal status and easily set the ignition timing. RaceChip chip tuning is specially customized to the applicable fuel injection technology with respect to both hardware and software. So even with less timing, it still ran better and turned a better ET than a stock CDI, for my application. The Red LED will light off. eBay Motors: HONDA CT70 ATC70 SS50 Z50 XL70 CDI Electronic Ignition (item 120252327971 end time Dec-19-08 19:59:50 PST) I'm going to run one of the above soon and will do a full writeup after I do the conversion along with pictures. its just a CDI. I`m going to have to be able to use factory crank triggers to get anywhere,no way around it. Upon start-up, the timing advances about ~20 degrees and then gradually backs off a few degrees at higher revs, maybe 2~3 degrees by 10,000 RPM. The 16F1827 PIC sold with KIT comes with a timing example in its Eeprom zone. Conversely, if the rev limiter malfunctions and the engine RPM. 6 sec, 0-60 mph: 8. Plug-in replacement module with four programmable advance curves that provide improved torque and 800% more spark energy for easier starts Four programmable timing curves One programmable rev limit per ignition curve. I seriously doubt such a kit existsit is a matter of using an appropriate switch and wiring a second box exactly like the original so it can be switched back and forth with the original at the push of a buttonwe built such a setup for many racing motorcycles. Yamaha YXR 660 Rhino -- 2004-2007. TPs/Timing Curve If a TPS sensor is being used on your application, the timing curves can be programmed relative to TPS input. Modeling Cardiac Hypertrophy: Endothelin-1 Induction with ELISA Analysis. It comes with description language, rendering engine and the editor. Referring to the above design of the proposed adjustable CDI spark advance and retard timer circuit, we can see an ordinary IC 555 and an IC 4017 circuit which are rigged in a standard "LED chaser light circuit" mode. 😉125zr) Ignition Advance 40 degree test. Some modern ignitions have an advance curve built into them The top dead center position has to be found with a piston stop as half the distance between the piston stop positions in both directions. Chain tensioner. The most important thing to remember is that AC input CDI units take their power supply from the engines stator. The JD37 has a original ignition system using a contact breaker (first version of this engine, but the newest version use a Capacitor Discharger Ignition System, it does have ignition timing compensation (engine speed only), I have a conjecture that this ignition timing curve is not opymized for this engine, because in Brazil this CDI is applied in other engines that have totally diferent. This Allows The Engine To Rev Up Much Quicker. 6al-2 will do your curves. For any given engine rpm, there is an optimum timing setting that provides maximum power. In addition, this unit offers a re-mapped timing curve which yields a noticeable. Plug-In Module Replacement (Easy Mounting) Please make sure that the item fits for your motor cycle before your purchase. ATV Galaxy is an authorized Blackbox dealer located in Irvine, California. A poor crimp connection could result in erratic operation especially on the low voltage side of the CDI. Zoomer CDI with coil and advance increased spark energy,easy starting operation more sensitive and efficiency. CDI Standard Wire Colours. Free shipping. 2) or the analog timing input (section 8. Somewhere around 1. The Varitronic has also been proven to cut exhaust emissions to such a degree that certain Lambrettas fitted with this would even pass the current Californian emission laws! The Varitronic is a complete electronic ignition system which includes the following Stator plate, flywheel, CDI, lighting regulator, instructions, wiring diagram and spanner. As if this wasn't frustrating. Improved Timing Curves. Plug-In Module Replacement (Easy Mounting) Please make sure that the item is fit for your motor cycle before your purchase. Based on the relatively buried location of the CDI, I'm guessing it would see temperatures ranging from ambient to that of the outside of the cylinders/crankcase. M&W recommend using zero ignition delay when installing a CDI system as the actual combustion delay may be significantly reduced and this will provide a safer, slightly retarded, initial timing curve (See also Q11). Caution, this feature allows the pilot to retard and over-advance the ignition timing, thus, potentially harming the engine and ruining your day. power loss from CDI wires to the coil. If you run a 12V Monkey or Chinese version, this item will deliver a significant increase in performance! Improved performance. This CDI box is a direct plug in. However using a system from an earlier machine, with a proper linear advance curve provided by a mechanical advancer driven by the cam, provides around 30% power increase over the stock motor. difficile acquisition among pediatric patients staying in a large, independently-owned outpatient housing facility. Via two internal switches you can adjust the. while prices further down the curve are more affected by. we haven't tried one of these yet, but to quote my man "fitting the 2 yellow cables together is curve one, open is two!". Electronic Ignition Capacitive Discharge Ignition ( CDI ) Transistor Controlled Ignition ( TCI ) The graph above is known as the timing curve and while typical, can quite obviously be hugely different for other motors. xr50 CDI boxes either have no or very little timing advance/curve as standard 2. I'm not sure of every reason, but I believe they have alot lower timing in the lower RPM's which helps alot with kickback. Initial timing may range from 5-degrees BTDC to zero and total around 28 to 32 at the most degrees. (BBK)performance CDI. 458-Curve-4000 Winches. ) Vacuum Advance. High Output CDI Box. Note that the "retard curve" is at maximum "advance" at idle, and that is the speed commonly used for checking/setting timing with a timing light -- so the timing specification for a CDI system is virtually always "more advanced" than a standard points system. It utilizes capacitive discharge and fires a series of multiple sparks that lasts for 20° of crankshaft rotation when the engine is running below 3,000 RPM.  Traditionally the timing curve has been set using analog components in the CDI. Performance CDI for the Honda TRX90 increases the rev limit by 1,000 rpm over the stock rev limit. The ignition features a timing curve based on boost so you can map out a timing curve based on boost pressure. All units deliver massive gains on the track, where you'll really notice the difference. maximum 10degree. This CDI box, also, drastically increases spark energy compared to the stock CDI. but as Aztec said STAY WITH OEM your issue could be from any of the following cheap aftermarket cdi, bad connections, dirty carb, old fuel, or low compression, and also improper jetting. Song Basher Full; Artist Getty Images Music 488822, Getty Images Music 488823, Getty Images Music 488826, Getty Images Music 488827, Getty Images Music 488828, Getty Images Music 488831, Getty. In addition, while going into a curve and closing the throttle in 2nd or 3rd gear the engine would come back with a big jerk when reapplying the throttle. The 89-90 models are different (30400-ML3-004) but they look to be the same part #. I finally got hold of a Lightning CDI to test it against a Jaguar Performance CDI on the bench. Unique double spark at all RPM gives improved power, outperforming other claimed multiple spark systems. Was this just curiousity on do you have a specific issue?--. A high-energy Capacitor Discharge Ignition system Based on an article by 'Silicon Chip' (Septermber 199 7) This completely new capacitor discharge ignition system has been designed from the ground up to provide a high energy "multiple spark discharge" to cope with engines which have very high RPM rates. - NEW upgraded 16 ignition timing curves, tailored to your engine for best efficiency ! - Ignition timing curves digitally calculated on the fly by high-accuracy microcontroller - Protected under high-reliability epoxy resin - Embedded in a stylish red ABS plastic-injected case. The most important thing to remember is that AC input CDI units take their power supply from the engines stator. Just drill straight in until the drill bit touches the aluminum timing plate bushing. The feature that most boosted drivers will enoy is the ability to pull timing out during the holeshot – and ramp it back in during the run. One slow, and one fast. The 4217 will not work on a 6 volt system you would need to convert it to 12 volts. Timing advance curve. This more retarded timing was likely to make the engine easier to start off the puny little battery. About Advance Timing– A number of factors should be considered in your choice of advance curve, the most significant of these is the overall carburetion. Adjustable mechanical advance with proprietary limiting function permits multiple settings. The camshaft is locked in the retard position at engine shut-off. - Duration: 1:06. The “Limited” setting digitally advances each cylinder as follows; #1Cylinder starts startup from 18º to 26º @ 4000 RPM. Capacitor discharge ignition (CDI) or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, turbine-powered aircraft, and some cars. Testing is the only way to get that information. And never really seen that perticular cdi in action. • Ignition timing will be retarded by 10° depending which curve is selected For an extra ignition timing range you can set the static ignition timing to 26° - 22° BTDC. 15°/8000RPM ). If our stator includes a pickup coil, always make sure the air gap is correct upon installation; we suggest as close as possible no less than 0. 1979/1980 Honda CR 125 OEM Replica HPI CDI. Dynatek has produced and awesome CDI box in the Dyna FS. Curve - load previously saved ignition curve set (from #1 to #2) Save Ign. Results vary, depending on the machine and its aftermarket alterations. And doing some testing at the IC. No RPM limitation. mechanical curve that starts about 100 rpm higher than the engines idle rpm and have all 26° in by 2,800 rpm, this is a good general purpose timing curve when used with 12° initial timing set at engine idle. Hide Illustration. Clients are buying this part for performance: Great add-on with an aggressive timing curve and increased rev limiter. Removes Forward and Reverse Speed Limiter. So even with less timing, it still ran better and turned a better ET than a stock CDI, for my application. chinese CDI boxes have up to 25% timing curve (which then overadvances the bike when paired with mechanical advance 3. Somewhere around 1. Another thing I was wondering, is there different CDI timing curves for 2 stroke and 4 stroke? I was guessing that all the modules are programmed the same. We set 9 curve for CDI,customers can choose the right curve according to actual condition, 9 curve can meet different users' engine performance needs; 2. There has always been historical disagreement as to the inventor (Edward Berger versus Sir Oliver Lodge) and date that the first electric plug was used to spark the air/fuel mixture in an internal combustion piston engine. Ignition Control Module CDI Box for Yamaha YFM 450 Grizzly-2007 Grizzly 450 2007. maximum 10degree. I've seen guys leap right into gear boxes, tear off top ends without the slightest hesitation. RaceChip chip tuning is specially customized to the applicable fuel injection technology with respect to both hardware and software. There are lot's of MSD or pertronic's ignitions running up and down the road every day without causing problems. Apparently the magneto gives off an alternating voltage of around 100 volts which is used both to power the CDI unit and as the spark trigger signal. Yamaha CDI Box Cdi Unit for Yamaha 4S9 F34 CRYPTON Z X1 CDI UNIT how cdis work Digital ignition chip ignition timing control, ignition angle curve can be set according to the needs of the user's vehicle, and. Ford FE Engine Ignition Systems Guide- Build Max Performance for the 332, 352, 361, 390, 406, 410, 427, and 428 Engines and How to Stroke Your Engine. With the timing curve in the CDI, you can get awfully advanced in the midrange, and depending on your jetting/clutching/riding style, that gets dangerous. Do you know if there is a website where i can find out more info on this switch. Prerequist: 1-Check that you scooter is compatible […] Made in France. Whereas DC input CDI units take their power supply from the motorcycle battery. The 78 & later stator / CDI combination provided the much needed timing curve which provided much better overall engine performance. Easier Starting. stock CT110 CDI boxes have essentially the same timing curve as an xr50 cdi box 4. The construction company reported ($0. Advance rate is 2º/376 RPM. The Procomp PC6AL-2 is the most powerful cd ignition of its type available. It is a strobe which is activated by whichever cylinder the engine "times" off of: #1 cylinder on most every vehicle, except some International Trucks, which for some resaon time off the back cylinders (6 or 8), and have timing marks on the flywheel. (NYCSP0007) 152qmi 157qmj 139qmb 1p57qmj 1p39qmb scooter atv buggie. This allows the timing to be set using a timing light, remote starter, spark gap tester, piston stop tool and a jumper wire. #2 Cylinder starts at startup from 18º to 25º @ 4000 RPM. Obviously, you would leave yourself a safety zone of 3-4 degrees of timing at all points to CYA in case of bad gasoline, clogged main jet, vacuum leak, abnormally hot engine, etc. E-MAGs automatically shift between the internal alternator and external (aircraft bus) power as needed – no operator action required. The 2003 CR125R CDI would lessen 'kick backs' (not that I find kick back a problem with the 00, 01 or 02 CDI's), the 03 CDI works with either Gas or AlcoholIMO the 03 CDI does not perform as well as the 01 CDI both on the Dyno or Track. The 5 pin wired version should have a connector which matches the 5 pin CDI pinout shown above. Replaces OEM part numbers 30400-444-003 / 30400-466-000. In addition, this unit offers a re-mapped timing curve which yields a noticeable increase to horsepower and torque over the stock CDI This CDI box is a direct plug in replacement CDI. One year Limited warranty. Steering switch for HPI CDI Double Curve. Whatever ignition advance the tuner set was the advance right through the rev range. Plus, the 80 Stings (only ones that used CDI) had all that Cat "is the throttle stuck wide open" switch stuff on it and it was notoriously problematic and. It is ready to go. CDI Box : Developed for ATV with Carburetor systems They are pre-programmed from the factory This CDI has a best advanced timing curve The MAX RPM allowed by the Procom CDI is 1000 RPM more than what a stock CDI would provide CDI Box (3 Curves Model) This CDI is adjustable in 3 steps. New VENOM performance CDI for 2004-2011 SX-R 800 Kawasaki stand ups. The unit has a built in best-selected timing curve and increases 500RPM than stock CDI. We at Vortex are committed to Off Road riding and devote our efforts to making the best even better and making the worst the best they can be!. Higher grade of electronic components. That small amount of time represents the advance curve of an engine, ie at idle an engine may need 10 degrees advance but at full revs it may need 40 degrees advance. CDI Ignition Yamaha Banshee - High Performance CDI - Easy Plug and Play Install ( Direct Bolt on ) - Enhanced timing curve, increased rev limiter (approximately 1000 rpm) - Easier Starting - Improved throttle response - Increased top speed (varies depending on motor work) - Fits - Yamaha YFZ350 Banshee Years - 1997- 2006. Hand Starting (Armstrong Starter): Unlike other electronic ignition systems, aircraft equipped with the LSE Plasma CDI may be hand-propped. • Ignition timing will be retarded by 10° depending which curve is selected For an extra ignition timing range you can set the static ignition timing to 26° - 22° BTDC. Page 1 of 2 - Bosch CDI Timing Curve - posted in Vintage Ski Doo's: Does anybody know what the timing curve looks like for these cdi's? For example, is the advance stepped at certain rpm or is it a linear advance? How much is the total advance? Reason I ask is I've been having trouble with a lack of power at the top end, and the engine will not turn over 8000 rpm while under load. CDI is a DC type CDI. Drag racing ignition system that allows control of timing for different track conditions. Unfortunately, like anything else, there is only so much gain that can be achieved before. Igniter, is an intelligent design of electronic circuit. I have a good condition msd enhancer cdi Stronger spark, more aggressive timing curve, adjustable rev limiter : ) $180 20200414_081726~2. That small amount of time represents the advance curve of an engine, ie at idle an engine may need 10 degrees advance but at full revs it may need 40 degrees advance. Our view, discussed at length in March and early April, remains unchanged: Such a shallow inversion (12 basis points between the 3-month and 10-year US Treasury yields, as of market close on Thursday) is largely indistinguishable from a flat or slightly positive curve, and overall, the global yield curve. stock orange wire to the brown/orange coil ( wire b or 2 ), stock black wire not used. Optimizing the ignition timing curve is a cheap and easy way to gain power across the entire rpm band. If our stator includes a pickup coil, always make sure the air gap is correct upon installation; we suggest as close as possible no less than 0. Advancing the timing at the stator will bring the hit on quicker but it will cost you some on the over rev. You are right, there is a 4 degree advance over the stock CDI's curve. When I did my testing, I had my timing plate on +5 with the stock CDI, then put the plate to 0, hooked up the dyna, and that's when I noticed the difference. Timing dynamically is fairly simple and is the best way to time your engine. You can put a Zeeltronic on the kit to give the ignition kit a curve. The Tempest 3 (T3) Billet ignition from Advent is the leading edge in ignition technology. Installation. The combination of the Mallory CDI box along with the custom calibrated DURASPARK had Project RedNeck idling smoother than a 2007 F250 with King Ranch package. Laser cut mounting bracket, magnet holder and counter-weight on Continental engine ignition systems, add $195 per engine installation. The camshaft is locked in the retard position at engine shut-off. However in terms of high-RPM function, it falls well short of ideal. Results vary, depending on the machine and its aftermarket alterations. With EFI, it is possible to use a more aggressive timing curve than you might be able to with a carburetor. effectively if your 2 stoke revs to say 8000 rpm its going to be sparking at 8000 x 2 = 16000 rpm. The electronics can be built into the original CDI case or supplied with our own cast replica case. Keep doing this up to the RPM you want and chart you timming advance/retard curve. Dynatek Performance CDI (8,500 stock) 9,500rpm limit. It means you have to inject the required amount of fuel and charge the ignition coil in half the time (approx 10 milliseconds at 6000rpm) compared to an equivalent piston engine. Increased Spark Energy. CDI - authorSTREAM Presentation. Note that the "retard curve" is at maximum "advance" at idle, and that is the speed commonly used for checking/setting timing with a timing light -- so the timing specification for a CDI system is virtually always "more advanced" than a standard points system. The steel ball is the right timing mark, and make sure you have ported vacuum to your vacuum advance, when you open the throttle the distributor should turn and advance the ignition. starting to look like the cdi (might be worth pulling the flywheel to check for anything obvious first though) good luck, and check if your timing does what mine does if you get it going:-) best, andy > A question for you though, have you had problems with the cdi on your 503? > Just acquired a scat with a 503 and it has stopped running to. a small car coil WILL work , its one of the tricks to get a higher voltage spark at the pliugs or if the original coil burns out. Probably programmed in the CDI output to the SCR's and igntion coil. Recommended ignition timing for 1972 351C-4V. Just a trick, Remove the PTO side plug, close the gap to 0 and reinstall it. Then increase to 4000 RPM, click the timing advance until the lines line up again. No I don't mean harder plugs, competition coils, lumenition etc. PVL Racing Ignition Installation Instructions Max. Rev until 20,000 RPM/330Hz. Troubleshooting the Cuyuna 430R ultralight aircraft engine. If our stator includes a pickup coil, always make sure the air gap is correct upon installation; we suggest as close as possible no less than 0. But, I don't know if the timing curve was the same. What application Trail , Drag , Radar ??? 1994-97 is a simple, common curve. The points of the cold curve were measured when the engine and CDI was cold and the points of the hot curve when everything was warmed up. They have a purpose-built electronic ignition, mated with a built-in permanent magnet alternator. Whatever ignition advance the tuner set was the advance right through the rev range. Laguna Niguel, CA USA - (+1) 714-630-0446. The reason they program cdi's is to get better low and top end power by varying the timing. Distributors are factory set with a performance advance curve and are provided with additional springs for custom advance curves. Use the timing light to check the timing at idle and around 3,000 – 4,000 RPM, when the advance has settled at the maximum. A timing light is the most common way to check ignition timing. CDI module for 660 Yamaha Rhino and Grizzly. It is better to pull off the prop hub and timing plate to do this, but you don’t have to. The FIREPLUG CDI is compatible with the factory stator harness. coil ground is obvious black( wire c or 3 w/bolt connector ) then you have to run a wire from the msd cdi wire harness brown/orange to the black coil wire ( a or 1 ). I understand +4 at the plate is +4 across the entire curve, and i also understand a custom curve is proly alot better. I'd figure the different timing curve of the CDI is a reason too. That works like an rpm rev limiter. Cdi #125zr standard ignition curve. The electronics can be built into the original CDI case or supplied with our own cast replica case. You can temporarily bypass a CDI box for troubleshooting purposes. (NYCSP0007) 152qmi 157qmj 139qmb 1p57qmj 1p39qmb scooter atv buggie. However in terms of high-RPM function, it falls well short of ideal. The most important thing to remember is that AC input CDI units take their power supply from the engines stator. Point 3 to 4) Part where engine has to start pulling/rolling the bike this can be set high on a track bike (around the 28/30) but set lower on a road bike (around 24/25) curve usually goes from high (point 3) to a couple degrees lower (point 4)On stock CDI's this part is set very save mostly just around or above the 20 degrees. Please indicate your bike model and year in the order so that jumpers can be pre-configured for you. In addition, our best re-mapped built-in timing curve can add huge horsepower to your machine. Probably programmed in the CDI output to the SCR's and igntion coil. Vape CDI Ignition and Charging System for the Yamaha RD250/350/400,R5, and DS7 (note: Vape was formerly Powerdynamo/MZB) Replaces the stock generator, points, condenser, coils and regulator found on the RD, R5 and DS7. Noticeably more power and a cleaner ignition curve are the. Classic Retrofit CDI+ ignition units are the best available. Our PeakRPM technology provides a more aggressive timing curve for increased throttle response Ride at full throttle with our application-specific CDI box that raises the rev limiter by 1000 RPM Enjoy fast & easy installation with our plug & play design and included dielectric connector grease. Just drill straight in until the drill bit touches the aluminum timing plate bushing. Electronic ignitions. All I did was figure out what the stock CDI did (US Suzuki claimed they did not have the timing curve information from Japan) by creating my own degree wheel setup. It feels. timing advance as per ignition curve diagram Align the stator with the rotor: If your coil and the CDI Module form one unit, the fastening will probably have to be modified in order to accommodate the PVL coil. A potentiometer can be used to bias the timing curve in flight from the cockpit. CDI Circuit using an SCR, a few Resistors and Diodes. This more retarded timing was likely to make the engine easier to start off the puny little battery. I just bought a Scooter Performance Racing CDI off of Ebay for $10. I had my jetting set up well for one of the two curves. Drag racing ignition system that allows control of timing for different track conditions. Higher Rev Limit • Improved T hrottle R esponse. The quality exceeds the OEM equipment. 2) or the analog timing input (section 8. i just need to see how the timing curve looks like so i can make further adjustments, any info. , fast along x and slow along y). #v100 #CDI Sedikit penerangan cara pasang wiring cdi blue skyfly Timing Light (check adakah programnye berkerja dgn btl. The CDI box is part of the Polaris engine's electronic ignition system. Installation. Then increase to 4000 RPM, click the timing advance until the lines line up again. Now run in a bottoming tap in until it stops. The easiest way to lock the timing plate is to drill (#36 drill) into the side of the plate and tap for a 6/32 set screw. What application Trail , Drag , Radar ??? 1994-97 is a simple, common curve. 20k, I have a cr125 that has a programmable two ignition curves. In addition, this unit offers a re-mapped timing curve which yields a noticeable increase to horsepower and torque over the stock CDI. Yes this will fit your Honda ride, please make sure you enter your ride year, make and model so you can get the correct part, this CDI Box will give increased rpm redline and altered ignition advance curves and with altered advance curves to increase performance throughout the rpm range. 10 things you need to know about rotary tuning. (NYCSP0007) 152qmi 157qmj 139qmb 1p57qmj 1p39qmb scooter atv buggie. A timing light is the most common way to check ignition timing. Nate Alba Racing. Somewhere around 1. A stock yfz base timing is the same as a raptor 125, although it has a bit more aggresive curve.  Traditionally the timing curve has been set using analog components in the CDI. The rising voltage waveform initiates the ignition to fire earlier to give the timing curve. Improved Throttle Response. I had my jetting set up well for one of the two curves. This is a great upgrade to go with a high compression engine. This allows you to precisely program ignition timing for optimum engine performance. I believe this is not a normal 1KT CDI the 00 ignition is unrestricted. You can get a timing light for about $30 at Wal-Mart, so it's not a big expenditure and is a wise investment. Adjustable mechanical advance with proprietary limiting function permits multiple settings. we haven't tried one of these yet, but to quote my man "fitting the 2 yellow cables together is curve one, open is two!". This ensures combustion with great throttle response and smooth idle. 1 advance curve programmed. Removed Reverse Rev Limit. Ford FE Engine Ignition Systems Guide- Build Max Performance for the 332, 352, 361, 390, 406, 410, 427, and 428 Engines and How to Stroke Your Engine. The software is very intuitive and simple to use, the trick is knowing what to program, not how. Is there any guidance given on what ign. The ignition system on your car has to work in perfect concert with the rest of the engine. Recommended ignition timing for 1972 351C-4V. This CDI module has the option of two timing curves, pump fuel (min. #v100 #CDI Sedikit penerangan cara pasang wiring cdi blue skyfly Timing Light (check adakah programnye berkerja dgn btl. New VENOM performance CDI for 2004-2011 SX-R 800 Kawasaki stand ups. Note that the "retard curve" is at maximum "advance" at idle, and that is the speed commonly used for checking/setting timing with a timing light -- so the timing specification for a CDI system is virtually always "more advanced" than a standard points system. This performance cdi unit has a built in best-selected timing curve and increases 500RPM more than stock CDI. Looking for detail on what KTM did to the ignition curve going from 2017 to 2018 250/300 XCW models with carburetors? What were the key issues with the 2017 ignition curve or map? Thanks I appreciate your feedback! Subnote: Likely there is a thread already on this topic. The variable camshaft adjuster provides an adjustment range of 60° crank angle. FIVE DIFFERENT ADVANCE CURVES- You can advance slowly to dial out pinging on high compression motors or bring the advance in quickly on quick revving motors or select a curve in between to maximize the performance of your combination. (This will require some modifications on your ATV for this additional power. Award # 1028177. This would imply a timing curve (advancing for 4t, or retarding for 2t, but both appear on all accounts to be identical and without timing curve. ECU & CDI Software. They would be triggered 45 degrees late for cylinder number 1 and 45 degrees. Shop-Racing Ignition timing calculator. Ignition Systems Cheat Sheet for the Chevy Small Block For our budget-oriented purposes we find that conceptually at least, GM's HEI distributor is a near ideal choice in terms of practicality. Possible with some bikes (eg, Dyna ignition) but they are fairly specific to a bike. Modeling Cardiac Hypertrophy: Endothelin-1 Induction with ELISA Analysis. Distributors are factory set with a performance advance curve and are provided with additional springs for custom advance curves. The box is typically an anodized blue with a sticker indicating some sort of curve. This option is primarily useful for engine testing and racing applications. Recommended ignition timing for 1972 351C-4V. Separate timing curve for each cylinder, eliminates detonation problems. This ensures combustion with great throttle response and smooth idle. on the fly adjustment with switch FITS SUZUKI FXR150 with MSS (Map Selector Switch) and PPA(Pulser Position Adjuster) With this innovation, user can adjust the. There has always been historical disagreement as to the inventor (Edward Berger versus Sir Oliver Lodge) and date that the first electric plug was used to spark the air/fuel mixture in an internal combustion piston engine. CDI units come in many different formats. ATV CDI Ignition Units A capacitor discharge ignition , or CDI , is a powerful ignition system used to create the spark used to ignite the air/fuel mixture in a cylinder. its just a CDI. It is better to pull off the prop hub and timing plate to do this, but you don’t have to. Do you know if there is a website where i can find out more info on this switch. Precision stamped and balanced mechanical advance weights eliminate erratic timing. You can 'clean up' the trigger signal and give it a more definate step up to the trigger voltage and push the timing curve within marginal limits. The Black Box Programmable Timing Control Module connects directly to your distributor and existing coil offering a fully programmable 21x21 spark table, good up to 10,000 rpm. The need to increase spark advance relative to engine speed was understood fairly early on in the motorcycle’s development, as evidenced by the early spark control mentioned previously. If your vehicle is specified in the list of applicable models below (all other 2. The Rick's Motorsport Electrics Hot Shot Polaris CDI box retains the stock curve and has a rev limit of 10,000 RPM. Features - 5 Different adjustable timing curves, 4 Different retard modes, Fully static time-able with built in LED light (Set the timing accurately without having the engine running), Broad range rev limiter (8,500 to 16,000), Increased horsepower & torque, Digital tach output (smooth & accurate), Increased spark energy, Improved throttle. The simple maps can increase huge horsepower to your machine. A adaptation from. The stock units did have 2 different amounts of advance: 50 degrees above idle and 22 degrees at idle. Dynatek Performance CDI (8,500 stock) 9,500rpm limit. There are 30 maps (ignition curve) which simultaneously used and controlled by the TPS to drives the optimum performance in any different engine load and condition. That small amount of time represents the advance curve of an engine, ie at idle an engine may need 10 degrees advance but at full revs it may need 40 degrees advance. Removes Forward and Reverse Speed Limiter. Plug-in replacement module with four programmable advance curves that provide improved torque and 800% more spark energy for easier starts Four programmable timing curves One programmable rev limit per ignition curve. It has many features built into a box that's smaller than the comparable MSD and Mallory Ignition systems, making it easier to fit into tight spaces. Very top quality unit. Just drill straight in until the drill bit touches the aluminum timing plate bushing. , that only affect the efficiency of the spark, but the actual ignition advance supplied by the distributor. A stock yfz base timing is the same as a raptor 125, although it has a bit more aggresive curve. Somewhere around 1. But im still curious if there are actually any cdi units you can buy for a points ignition S series bike. Sudco now only sells Chinese made points for the S3 so I was hesitant on replacing them. CDI units come in many different formats. The box is typically an anodized blue with a sticker indicating some sort of curve. This CDI box, also, drastically increases spark energy compared to the stock CDI. For instance, the Programmable 6AL-2 connects to a PC where the user can map out a timing curve for their application. the 88/89 cdi has a slight different timing curve and will work on 85-89. The ability to alter the timing curve on a aftermarket ignition or a reburned brain box usually helps the torque curve in the first 60 ft at a lower rpm than most stock units. The easiest way to lock the timing plate is to drill (#36 drill) into the side of the plate and tap for a 6/32 set screw. That's in addition to the rpm advance curve timing changes. It also will eliminate the reverse rev limiter. With its ability to custom map 2 different timing curves and rev-limits it has been used in nearly every 686 build to date in our shop. It has a linear timing curve that advances as the rpm on the engine goes up. At 4400 RPM, the Run Retard Curve pulls 9 degrees, so the Total Ignition Timing at 4400 RPM is 25 degrees BTDC (34-9=25). Via two internal switches you can adjust the. Probably programmed in the CDI output to the SCR's and igntion coil. Yes this will fit your Honda ride, please make sure you enter your ride year, make and model so you can get the correct part, this CDI Box will give increased rpm redline and altered ignition advance curves and with altered advance curves to increase performance throughout the rpm range. Many newer boxes have limits to how much advance can be programmed into them. On my dyno, so there was a load, from 10,000 RPM to 14,000 RPM, the timing did not move. Before engine computers, cars used a mechanical means of producing a timing curve. And never really seen that perticular cdi in action. In addition, this unit offers a re-mapped timing curve which yields a noticeable. Our PeakRPM technology provides a more aggressive timing curve for increased throttle response Ride at full throttle with our application-specific CDI box that raises the rev limiter by 1000 RPM Enjoy fast & easy installation with our plug & play design and included dielectric connector grease. Now you are in submenu for setting ignition curve. Introduction. 00 +shipping). Our boxes are a completely new design. Shaft, Model# GX690RHTDW. Just drill straight in until the drill bit touches the aluminum timing plate bushing. Our PeakRPM technology provides a more aggressive timing curve for increased throttle response; Ride at full throttle with our application-specific CDI box that raises the rev limiter by 1000 RPM; Enjoy fast & easy installation with our plug & play design and included dielectric connector grease. Follow the directions for your timing light and connect it to the vehicle’s battery and the number one spark plug. However, you can also make your own map or download the maps below according to the modification of your machine. ¶ Ignition timing seems to be the one thing that terrifies the home mechanic most. Obviously, you would leave yourself a safety zone of 3-4 degrees of timing at all points to CYA in case of bad gasoline, clogged main jet, vacuum leak, abnormally hot engine, etc. The weights and springs inside your existing distributor are removed and the mechanical advance is locked out so the timing is controlled entirely by the MSD Ignition Timing Control. #v100 #CDI Sedikit penerangan cara pasang wiring cdi blue skyfly Timing Light (check adakah programnye berkerja dgn btl. Cdi #125zr standard ignition curve. Hi, Ive ordered a 4217 CDI to fit to my Honda XR650L based single cylinder race bike here in the UK. I couldn't stand how these particular models ran in traffic. Lighter than full size flywheel for quicker rev but still retains enough wieght for good torque. Set your point dwell between 28-32. The later ultralight motors were detuned significantly from the snowmobile engines, but I don't know if they changed the timing curve too. Is there any guidance given on what ign. Plus, the 80 Stings (only ones that used CDI) had all that Cat "is the throttle stuck wide open" switch stuff on it and it was notoriously problematic and. The parts include the flywheel, the stator, the charging coil, the hall sensor and the timing mark.   Designed to enhance overall performance when installin. Can you tell me is the difference in the two curves actually noticable when riding or is it a very sublte difference. However, you can also make your own map or download the maps below according to the modification of your machine. A max-performance engine typically intakes a larger fuel/ air […]. It is ready to go. With a 1KT or 2MA does the power normally come in hard at 7000 or lower. Brand new High Performance aftermarket CDI Box Ignition Coil Calibration Module Our PeakRPM technology provides a more aggressive timing curve for increased throttle response Ride at full throttle with our application-specific CDI box that raises the rev limiter by 1000 RPM. Hi, Ive ordered a 4217 CDI to fit to my Honda XR650L based single cylinder race bike here in the UK. < Sponsored Listing 9 Ignition Curve; 1. A stock yfz base timing is the same as a raptor 125, although it has a bit more aggresive curve. Separate timing curve for each cylinder, eliminates detonation problems. High-performance engine builders will sometimes change valve timing for heavily modified mills, but for the most part, valve timing should be set to manufacturer's specs. xr50 CDI boxes either have no or very little timing advance/curve as standard 2. Great timing curve , will require an idle adjustment. Unique double spark at all RPM gives improved power, outperforming other claimed multiple spark systems. Toll Free Number: 855-694-8763 Intl. There are lot's of MSD or pertronic's ignitions running up and down the road every day without causing problems. nippondenso ignition engine fitted to some ski-doos around 15 yrs ago - i understand it's in the region of 2mm BTDC but can't find anything accurate. You can put a Zeeltronic on the kit to give the ignition kit a curve. Maxes out at 4,000 rpm. There isn't much you can do to alter this system. Race Ignition CDI Box For ETON VIPER RXL50 RXL70 AXL50 TXL50 TXL90 DXL90. Improved Throttle Response. (2) On 1972 models, indirect spec same as direct. FIREPLUG ARC CDI 76 MERCURY Sno-Twister KOHLER RLC / THUNDERBOLT $ 175.  Traditionally the timing curve has been set using analog components in the CDI. I knew what they tell us in the manual initial timing is 10 degrees BTDC but not the total advance and the advance curve. But testing the CDI's on my bench at 3000rpm (50hz) I saw that the spark timing is just a tad later on the non-SR CDI (look for the small voltage change after the signal goes negative), although maybe the timing curve is different at high revs. Curve 1 is stock timing curve. Change IGNITION CURVE Enter menu and move to Ignition Curve with pressing + or - and then press enter. I make a performance CDI for the KDX and I can tell you that the stock one uses resistors with +/- 5% values, and capacitors with +/- 10% values. we haven't tried one of these yet, but to quote my man "fitting the 2 yellow cables together is curve one, open is two!". Thanks to multi-inflection curve, so the smoothness of the vehicle is. Timing induction lamp - Ignition timing. Fits the following models: 1968-1973 Yamaha DT1, DT2, DT3 1973-1974 Yamaha MX 250 1974-1975 Yamaha YZ 250 The kit includes a stator, CDI, coil magneto, plug cap, kill switch and mounting hardware. In healthy adults, the colon contains as many as 10 12 bacteria per gram of contents, with obligate anaerobes outnumbering facultative organisms by ∼1000:1. To know where we are on the curve, we need to know how many people have the virus. Was this just curiousity on do you have a specific issue?--. All wrapped up and ready for dialing in initial timing (12-14 degrees). If you run a 12V Monkey or Chinese version, this item will deliver a significant increase in performance! Improved performance. Aftermarket CDIs change your timing curve but not the base timing of the engine (they can alter the amount of advance, rate of advance, etc). How do I know how to modify a curve? How easy is it to program a curve? What will the Curve Maker program run on? (System requirements) What is the best timing advance curve and rpm limit for use in my motor? What jetting is recommended? What spark plug wire type and spark plug should I use?. At what RPM the timing curve starts to retard depends in part on its resistance of 1264 ohms and capacitance of 4. Curve - load previously saved ignition curve set (from #1 to #2) Save Ign. Connect the ignition switch (red connector) and, for ignitions with two ignition curves, the ignition curve selector switch (green connector). The HPI cdi for the ktm SXF450 2007-2010 is a 2 curve unit which you can change between the curves while riding via a handle bar switch,the unit come pre programmed with power improving igntion timing,you can purchase the programming equipment if you wish to re work the curves to suit your engine tuning,this is not normally required. This performance cdi unit has a built in best-selected timing curve and increases 500RPM more than stock CDI. No wire connected: Program 1 – least initial timing advance. Before engine computers, cars used a mechanical means of producing a timing curve. 16 timing curves from which to choose, uses existing coils. This CDI plugs into your existing wire harness and is a perfect fit in your buggy's electrical box where the stock one was mounted. Is there a way to search. I just bought a Scooter Performance Racing CDI off of Ebay for $10. It does this in two ways. Home / Technical instructions. Features - 5 Different adjustable timing curves, 4 Different retard modes, Fully static time-able with built in LED light (Set the timing accurately without having the engine running), Broad range rev limiter (8,500 to 16,000), Increased horsepower & torque, Digital tach output (smooth & accurate), Increased spark energy, Improved throttle response & easier starting, Easy mounting. Dynatek Dirtbike Products and FAQ. Once you have a base curve you should have no problem plotting in a curve or curves for optimum performance especially if you have access to a dyno. The DRSP-1 plugs into the Dyna FS ignition module to enable the use of the 4 pre-programmed ignition advance curves as well as make fuel adjustments. I dynoed every curve of the tokyo modded box and there was very little difference between them. You are right, there is a 4 degree advance over the stock CDI's curve. Whereas DC input CDI units take their power supply from the motorcycle battery. The pump fuel curve is intended for stock compression only. timing is retarded from the optimum timing point for full sequential by an angle which is equal to 1/2 the angle between 2 cylinders in crankshaft degrees. DC-CDI Heatsink Version. Is there any guidance given on what ign. Classic Retrofit CDI+ ignition units are the best available. Probably programmed in the CDI output to the SCR's and igntion coil. 1 advance curve programmed. We used multiple logistic regression with the above risk factors to examine how they interacted with log 10 PCT in a pairwise fashion. This allows you to precisely program ignition timing for optimum engine performance. Shop-Racing Ignition timing calculator. there is a 2 stroke moped cdi i have used in the past, works awesome, has a real timing curve. maximum 10degree. By using this new and improved workflow, physicians are no longer interrupted while caring for a patient and can complete documentation gaps on their downtime. In addition, this unit offers a re-mapped timing curve which yields a noticeable increase to horsepower and torque over the stock CDI This CDI box is a direct plug in replacement CDI. Ignition timing is easily the single most important tuning adjustment on an internal-combustion engine, yet the concept of ignition curves continues to be elusive for many enthusiasts. Housed in an attractive billet aluminum housing, the Black Box. A kx cdi has still got 3 wire's going to stator coil , but from what I can work out is one of those wire's is for timing curve, and is a smaller coil. I believe this is not a normal 1KT CDI the 00 ignition is unrestricted. PROCOM Performance CDI increases rev limit 1,000 RPM over the stock (from stock CDI 9,000RPM to Procom CDI 10,000RPM) This unit offers a re-mapped timing curve which yields a noticeable increase to horsepower and torque over the stock CDI This CDI box is a direct plug in replacement CDI Simply locate and remove the stock CDI, and plug the Procom unit directly into the wiring harness, no. They would be triggered 45 degrees late for cylinder number 1 and 45 degrees. The curve "0" is "transparent mode", i. File Type Description Download; Dyna 2000 for 4 cylinder engines Installation Guide (For DDK1-2, 1-5, 2-1, and 3-2) Dyna 2000 1987-90 Honda CBR 600F Installation & User Guide. Doesn't the CPS get altered in the CDI? I don't know how it can react very quickly to throttle position changes. The points of the cold curve were measured when the engine and CDI was cold and the points of the hot curve when everything was warmed up. How Two Stroke Engine Works Welcome guys, hope you all are good. We once used a kawasaki sportbike coil and cdi on a 1984 suzuki lt250ef atv. This redesigned CDI Box/Rev. Number: 001-855-694-8763. rev-limiters. MSD Explains Timing Adjustment on their E-Curve Digital Distributor By Lindsey Fisher August 14, 2012 Let’s be honest, setting the ignition timing on your car is not the most glorious project in the world but it’s very important if you want your vehicle to run right. This redesigned CDI Box/Rev. The DRSP-1 plugs into the Dyna FS ignition module to enable the use of the 4 pre-programmed ignition advance curves as well as make fuel adjustments. Included in the ICE software is an extensive library of standard timing curves / maps for all supported bike models (over 100), which gives first time user a valuable starting platform to develop from. Curve 2 has a built in advance timing curve. com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page. Does anyone have in depth knowledge of the different xcr timing curves, the different flywheels, cdi boxes and stators, I've heard that putting and xcr 700 cdi box on an 800 helps performance, I'm putting a 2000 xcr 800 in my 96 xcr 600 sp, rather than switch all the wiring harnesses an all the bs with it. We set 9 curve for CDI,customers can choose the right curve according to actual condition, 9 curve can meet different users’ engine performance needs; 2. I had my jetting set up well for one of the two curves. Compared to the original ignition curve, 9 ignition curve can start faster with high-speed and strong explosive force ; 3. A timing light is the most common way to check ignition timing. Shop-Racing Ignition timing calculator. Curve 1 is stock timing curve. This CDI is similar to our orange performance CDI but has a more aggressive ignition advance curve.