PDF specifications
Contents
1. Installation Instructions 8 Channel Twin Fire Ignition System PN 30 2820 4 Channel Twin Fire Ignition System PN 30 2821 WARNING This installation is not for the electrically challenged Use this ignition with EXTREME caution If you are uncomfortable with anything about this please refer the installation to an AEM trained tuning shop or call 800 423 0046 for technical assistance You should also visit the AEM Performance Electronics Forum at http forum aempower com NOTE AEM holds no responsibility for any engine damage that results from the misuse of this product IMPORTANT PLEASE NOTE MAIN FUSE REQUIREMENTS ON PAGE 4 This product is legal in California for racing vehicles only and should never be used on public highways ADVANCED ENGINE MANAGEMENT INC 2205 126 Street Unit A Hawthorne CA 90250 Phone 310 484 2322 Fax 310 484 0152 http www aempower com Instruction Part Number 10 2820 Rev F 2003 2006 Advanced Engine Management Inc 2 INSTALLATION INSTRUCTIONS IMPORTANT Read these instructions completely before attempting this installation You MUST ground all unused ignition trigger input wires Solid core spark plug wires cannot be used with an AEM Twin Fire ignition system Suppression type resistor spark plugs must be used with the AEM Twin Fire ignition system The AEM Twin Fire 8 Channel Ignition can be used on 3 4 5 6 8 and 10 cylinder engines equipped with four or more ignition c2. cylinder engines ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 5 INSTALLATION INSTRUCTIONS WIRING INTO A FACTORY IGNITION SYSTEM WITH AN IGNITOR IGNITION AMPLIFIER If you have a service manual or wiring diagram for your car now is the time to refer to it If one is not available follow these steps Disconnect all the wires leading to the coils Turn the ignition to the ON position Using a voltmeter check each wire for 12 volts Each coil should have 1 wire with 12 volts If none of the coils have 12 volts have someone crank the engine while you test for 12 volts The wire that has 12 volts is the Coil positive Turn Off the ignition switch and connect the I O Harness RED wire to the factory wiring and the I O Harness PINK or TAN wire to the positive side of the coil These two wires are not interchangeable they must go to their respective channels Do this on each remaining coil 7 The remaining wires on the factory wiring loom are the coil trigger wires o Connect the I O Harness WHITE wire to the first factory trigger wire and then connect the I O Harness BROWN Coil wire to the corresponding Coil terminal o Connect the I O Harness GREEN wire to the second factory trigger wire and then connect the Harness ORANGE Coil wire to the corresponding Coil terminal o Connect the I O Harness YELLOW wire to the third factory trigger wire and then connect the I O Harness B
3. CDI with the same coil will produce 50 000 volts or more at the spark plug MULTI STRIKE The AEM CDI Ignition system triggers multiple spark plug firings for each ignition event The actual number of sparks depends on the time available This time will decrease as rpm increases and so does the number of additional spark events Generally the additional sparks occur for approximately 20 of crankshaft rotation At high RPM there is only one spark due to the time limitations BATTERY The AEM Twin Fire Ignition system is designed for negative ground 12 volt and 16 volt electrical systems The AEM Twin Fire Ignition system will deliver full voltage with a supply of 8 18 volts and will operate with battery voltages as low as 5 volts COILS WARNING THE AEM TWIN FIRE IGNITION CANNOT BE USED WITH MERCURY MARINE COILS The AEM Twin Fire Ignition system is designed to be used with most stock coils that do not have an integral igniter ignition amplifier If your coil has only 2 electrical connections then it does not have an integral igniter If it has 3 or more or is a DIS coil pack it may have an igniter built in If you have any questions concerning the suitability of your coils with the AEM Twin Fire Ignition system DO NOT hook up the AEM Twin Fire Ignition Contact the manufacturer of your car or a tuner knowledgeable with your application and confirm that the coils do not have an internal ignitor Hooking up the AEM Twin Fire Ignition to a coil
4. TRIGGER 4 NO CONNECT IBI CYL4 MK IV Toyota Supra wasted spark w COP and an external Ignitor 4 channel CDI SETTING UP THE TWIN FIRE IGNITION SYSTEM The AEM Twin Fire Ignition system has several setup options which allow you to customize the ignition to meet your specific requirements Three switches are located on the end panel and allow you to set these options The AEM Twin Fire Ignition systems are pre programmed before leaving the factory for proper operation on most 4 6 and 8 cylinder engines equipped with a distributorless ignition system and the TWIN FIRE IGNITION wired after the ignition amplifier CONFIGURATION LED MONITOR SWITCHES Below is a list of the Twin Fire Ignition systems programmable features Switch 1 Multi Strike Disable S1 enables or disables multi strike spark plug firings Disabling Multi strike 81 On makes engine timing much easier to check Enabling Multi strike 81 Off Default makes the engine run smoother at low speeds ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 17 INSTALLATION INSTRUCTIONS Switch 2 Trigger Edge S2 sets the input trigger edge that the Twin Fire uses to trigger the spark plug firing Rising edge S2 Off Default is used when the Twin Fire is wired in AFTER the ignitor Ignition Amplifier or if the ignition did not have an external ignitor and there is not one inside the coils Falling edge S2 On is used when
5. about 004 for every 50 hp you add However when you add a high power ignition system such as the Spark1 you can open the gap back up about 002 005 As an example let s use a hypothetical 93 350 Chevrolet LT1 engine build up standard gap is 050 for an un modified LT1 We ll add 150hp Nitrous so we must lower the gap about 012 to 038 We then decide to add the Spark1 and using our guidelines as outlined above we can now open the gap up 002 005 to about 040 043 following this basic guideline should get you very close Further experimentation may be necessary but by starting with a larger gap than thought necessary to reduce the risk of detonation you should be safe Other issues that may require a smaller gap are if the plug boot does not fit snug over the plug If you ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 19 INSTALLATION INSTRUCTIONS pull the plugs and see black streaks that will not wipe of where the plug boot sits then you have flashover This will also show up as misfires under high boost conditions If you have this problem in addition to lowing the plug gap you can use a silicon dielectric grease in the boot 4 What heat range should use for my spark plugs The heat range refers to how much heat a spark plug is capable of removing from the combustion chamber When compression is raised along with the added power comes added heat Since spark plugs must remove h
6. above process transpires AEM will not be responsible for electronic products that are installed incorrectly installed in a non approved application misused or tampered with Any AEM electronics product can be returned for repair if it is out of the warranty period There is a minimum charge of 50 00 for inspection and diagnosis of AEM electronic parts Parts used in the repair of AEM electronic components will be extra AEM will provide an estimate of repairs and receive written or electronic authorization before repairs are made to the product ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250
7. at higher RPM on even fire engines odd fire engines and even on twin plug combustion chambers allowing for leading and trailing ignition maps without limitation This ability to generate full power sparks regardless of engine RPM is why you will benefit with a Twin Fire ignition With complete combustion regardless of boost level instantaneous throttle response smoother idle easier starts and reduced plug fouling you can t help but win While all engines will realize this benefit heavily modded engines will gain the most from this type of ignition setup 2 How do know which wires come from each storage capacitor The 540v outputs from the 2 storage caps are the PINK and TAN wires The TAN wire is for channels 1 amp and the PINK is for channels 2 amp 4 These are not interchangeable If these are hooked up wrong example PINK 540 to BROWN CH 1 trigger then misfires and extra sparks will occur Do not do this 3 What is the best spark plug gap for my application Since there are so many engine combinations and manufacturers AEM cannot recommend which gap is exactly right for your application Insufficient spark plug gap can cause pre ignition detonation even engine damage Too much gap can result in a higher rate of misfires noticeable loss of power plug fouling and poor economy When you raise the compression ratio or add forced induction a turbo system nitrous or supercharger kit you must lower the gap reduce gap
8. G DIAGRAMS See the following wiring diagrams for installations on different vehicles and applications If you experience difficulties when installing your AEM Twin Fire system call our Performance Electronics Help desk at 810 484 2322 x303 Monday Friday 8am 5pm pacific standard time ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 INSTALLATION INSTRUCTIONS DG VERY IMPORTANT ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES ENGINE AND THE PINK COIL 540V LEAD ONLY POWERS COILS CONTROL TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES ome HH ug a MODULE ECU In T ER 1280 IGNITION TRIGGER 1 E LG core IGNITION TRIGGER 2 e a IGNITION TRIGGER 3 IGNITION TRIGGER 4 RED SWITCHED 12V IGNITOR RED SWITCHED 12V l IGNITION AMPLIFIER BATTERY NEGATIVE TACHOMETER BATTERY POSITIVE OUTPUT EB a BYPASS PLUG 4 CH ONLY Typical 4 Cylinder coil plug with external ignitor 4 channel ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE 90250 INSTALLATION INSTRUCTIONS ENGINE VERY IMPORTANT CONTROL ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS MODULE COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES ECU AND THE PINK COIL 540V LEAD ONLY POWERS COILS
9. LED Indicator Ignition trigger Tach Output 12v square wave Tach Output 12v square wave Multi Strike Duration 20 degrees Multi Strike Duration 20 degrees Energy Output Max 175 189 milliJoules per spark Energy Output Max 175 189 milliJoules per spark Output Voltage Primary 500 540 volts Output Voltage Primary 500 540 volts Secondary assume 100 1 Secondary assume 100 1 50 000 to 54 000 volts 50 000 to 54 000 volts Size 5 5 L x 4 6 W x 1 4 H Size 5 5 L x 4 6 W x 1 4 H Weight 1 7 Lbs Weight 1 7 Lbs ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 3 INSTALLATION INSTRUCTIONS CAPACITIVE DISCHARGE The AEM Twin Fire Ignition system is a 4 or 8 channel multiple spark twin capacitive discharge ignition system The Twin Fire ignition technology delivers full energy to the spark plug at engine speeds exceeding 10 000 rpm regardless of the time between ignition events ensuring that pressurized fuel mixtures are thoroughly ignited The Twin Fire s capacitive discharge ignition CDI produces a fast high energy pulse that is applied to the ignition coil that is over 500 volts and up to 30 amps A standard inductive ignition system typically produces only about 250 volts on the coil primary This higher voltage is what allows the coil to produce a much higher spark voltage A typical ignition coil 1 100 turns ratio with an inductive ignition will produce about 25 000 volts to the spark plug but using the
10. LUE Coil wire to the corresponding Coil terminal o Connect the I O Harness VIOLET wire to the fourth factory trigger wire and then connect the I O Harness GRAY Coil wire to the corresponding Coil terminal QM o CU pe cs VERY IMPORTANT If you are not using all the coil inputs then you MUST ground the unused trigger input wires The Tan coil 540v lead can out only power coils triggered by the Brown or Blue output wires The Pink coil 540v lead out can only power coils triggered by the Orange or Gray output wires Failure to follow these instructions WILL result in a misfire at idle and low engine load as well as erratic spark events that may trigger randomly Check your wiring with the diagrams supplied on pages 6 13 and make changes if necessary To confirm that the wiring has been connected properly plug in the supplied bypass plug 4 CH only into the I O Harness and then start the engine If the engine does not start or does not run properly then there is a wiring problem Recheck all of your wiring The only wires that should be going to your coils are the BROWN ORANGE BLUE GREY PINK and TAN wires Do not hook any other wires to the coil The Red wires connect to a 12 volt battery source that deactivates when the key is turned off This turns the Twin Fire On and Off with the vehicles ignition switch Now it is safe to connect the large Red wire to battery positive and the large Black wire to battery ground negative WIRIN
11. NERAL WIRING RECOMMENDATIONS e Solder wire joints for the most trouble free connections e Always run wires away from direct heat and sharp edges ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 INSTALLATION INSTRUCTIONS A poor ground connection is the leading cause of ignition problems Connect ground wires directly to the negative battery terminal or engine block There must be a ground strap connecting the engine to the chassis If connecting a ground to the engine block ensure it is a clean paint free metal surface AEM TWIN FIRE WIRE FUNCTIONS There are 3 unterminated wires that exit directly from the CDI case RED HEAVY BLACK HEAVY WHITE Power INPUT Connect to the Battery or the positive side of the starter solenoid through a 15A fuse Do not connect this directly to 12volts without an inline fuse This should always have 12 volts when the battery is connected Ground INPUT Connect to the Battery or a good chassis ground Tach Connect to auxiliary tachometer shift light etc I O Harness connections 1 I O harness supplied with the 4 channel 2 harnesses supplied with the 8 channel WHITE GREEN YELLOW VIOLET RED x2 TAN PINK BROWN ORANGE BLUE GRAY Ign 1 input Connect to the Ignition Amplifier or ECU Output of Channel 1 Ign 2 input Connect to the Ignition Amplifier or ECU Output of Channel 2 Ign 3 input Connect to the Ignition Ampl
12. OL MODULE ECM RED SWITCHED 12V RED SWITCHED 12V IGNITION TRIGGER 5 WHITE ERN IGNITION TRIGGER 6 IGNITION TRIGGER 7 Ies BA IGNITION TRIGGER 8 a CUT ER Loc EH 80 ERO 1180 8 Cylinder COP wired direct to ECU without external Ignitor 8 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE 90250 11 INSTALLATION INSTRUCTIONS VERY IMPORTANT ENGINE ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES rale 13 AND THE PINK COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES ECU IGNITION TRIGGER 1 IGNITION TRIGGER 2 IGNITION TRIGGER 3 IGNITION TRIGGER 4 RED SWITCHED 12V IGNITOR RED SWITCHED 12V l IGNITION AMPLIFIER BATTERY NEGATIVE BATTERY POSITIVE TACHOMETER OUTPUT BYPASS PLUG 4 CH ONLY 8 Cylinder wasted spark without an external Ignitor 4 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 12 ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE 90250 INSTALLATION INSTRUCTIONS VERY IMPORTANT ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES AND THE PINK COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRE
13. ORNE CA 90250 14 INSTALLATION INSTRUCTIONS VERY IMPORTANT ENGINE ENSURE THAT THE TAN WIRE IS NOT CONNECTED AND IS WELL INSULATED CONTROL ENSURE THAT THE GREEN YELLOW amp VIOLET WIRES ARE GROUNDED MODULE ECU IGNITION TRIGGER 1 WOME GREEN GROUND YELLOW GROUND BLUE NO CONNECT VIOLET GROUND GRAY NO CONNECT RED SWITCHED 12V IGNITOR RED SWITCHED 12V IGNITION AMPLIFIER ORANGE NO CONNECT PINK INSULATE WELL BATTERY NEGATIVE BATTERY POSITIVE TACHOMETER OUTPUT AK mE LJ BYPASS PLUG 4 CH ONLY Distributed engine with a single coil and an external Ignitor 4 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 15 INSTALLATION INSTRUCTIONS COIL 1 H MK IV SUPRA WITH AEM EMS Ae FH 380 VERY IMPORTANT ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS H COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES m AND THE PINK 540 LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES MK IV WIRE COLORS AEM WIRE COLORS IGNITION TRIGGER 21 BROWN IGNITION TRIGGER 3 RED SWITCHED 12V RED SWITCHED 12V BATTERY NEGATIVE SUPRA IGNITOR MK IV SUPRA FIRING ORDER 1 5 3 6 2 4 With AEM EMS 6 Paired 5 2 Paired 3 4 Paired RED SWITCHED 12V RED S
14. S Sse CUT oU IGNITION TRIGGER 1 NO CONNECT IGNITION TRIGGER 2 NO CONNECT RED SWITCHED 12V RED SWITCHED 12V PINK NO CONNECT BUT MUST INSULATE 540 VOLTS MUST GROUND ALL UNUSED TRIGGER TACHOMETER INPUTS OUTPUT BATTERY NEGATIVE BATTERY POSITIVE ENGINE 45 one ECM 154 RED SWITCHED 12V RED SWITCHED 12V NO CONNECT BUT MUST INSULATE 540 VOLTS IGNITION TRIGGER 3 IGNITION TRIGGER 4 NO CONNECT IGNITION TRIGGER 5 MUST GROUND ALL UNUSED TRIGGER INPUTS 10 Cylinder wasted spark without an external Ignitor 8 channel CDI 13 INSTALLATION INSTRUCTIONS ENGINE VERY IMPORTANT LEAD PLUGS TRAIL 1 TRAIL 2 CONTROL ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS MODULE COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES ECU AND THE PINK COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES LEAD IGN TRIGGER TRAIL IGN TRIGGER 1 TRAIL IGN TRIGGER 2 YELLOW NO CONNECT RED SWITCHED 12V IGNITOR RED SWITCHED 12V IGNITION AMPLIFIER BATTERY NEGATIVE TACHOMETER BATTERY POSITIVE OUTPUT MUST GROUND ALL UNUSED TRIGGER INPUTS PASS PLUG CH ONLY BYPASS 4 Rotary engine with wasted spark lead direct ignition trail with an external Ignitor 4 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTH
15. TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES IGN TRIGGER 1 IGN TRIGGER 2 GRAY NO CONNECT BLUE NO CONNECT RED SWITCHED 12V IGNITOR RED SWITCHED 12V IGNITION AMPLIFIER TAN BATTERY NEGATIVE BATTERY POSITIVE TACHOMETER OUTPUT MUST GROUND ALL UNUSED TRIGGER INPUTS BYPASS PLUG 4 CH ONLY Typical 4 Cylinder with 2 double ended coils and an external ignitor 4 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 INSTALLATION INSTRUCTIONS ENGINE VERY IMPORTANT CONTROL ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS MODULE COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES ECU AND THE PINK COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES IGNITION TRIGGER 1 NO CONNECT IGNITION TRIGGER 2 NO CONNECT RED SWITCHED 12V IGNITOR RED SWITCHED 12V PINK NO CONNECT BUT IGNITION MUST INSULATE 540 VOLTS AMPLIFIER BATTERY NEGATIVE BATTERY POSITIVE TACHOMETER OUTPUT MUST GROUND ALL UNUSED TRIGGER INPUTS BYPASS PLUG 4 CH ONLY Typical 4 Cylinder with a coil pack and an external ignitor 4 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 INSTALLATION INSTRUCTIONS mu ER E VERY IMPORTANT ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE BRO
16. WITCHED 121 YELLOW w RED STRIPE IGNITION TRIGGER 22 IGNITION TRIGGER 4 YELLOW w BLACK STRIPE es BA 1 280 e 8 B 1 H4 MK IV Toyota Supra wasted spark w COP and an external Ignitor 8 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE 90250 16 INSTALLATION INSTRUCTIONS MK IV SUPRA WITH AEM EMS VERY IMPORTANT ENSURE THAT THE TAN GOIL 5401 LEAD ONLY POWERS COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES AND THE PINK COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES MK IV WIRE COLORS AEM WIRE COLORS GREEN IGNITION TRIGGER 21 WHITE 2 BROWN IGNITION TRIGGER 82 LAVENDER w TELLCM STRIPE oco GREEN IGNITION TRIGGER 3 VIOLET RED SWITCHED 12V EH 53 d E RED SWITCHED 12V T 12802 SUPRA IGNITOR ue xad Em 4 f lt Cc I PC a z ge LJ A MK IV SUPRA FIRING ORDER n 1 5 3 6 2 4 With AEM EMS gt 1 6 Paired m 5 2 Paired 91 18 3 4 Paired BATTERY POSITIVE BATTERY NEGATIVE H eno TACHOMETER OUTPUT YELLOW STRIPE IGNITION TRIGGER 6 NO CONNECT whGREEN STRIPE IGNITION TRIGGER 5 NO CONNECT FELLOW w BLACK STRIPE HH 8 In IGNITION
17. WN OR BLUE OUTPUT WIRES AND THE PINK COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES W e FER Mmeo 1280 H 80 IGNITION TRIGGER 2 cue E E IGNITION TRIGGER 3 IGNITION TRIGGER 4 RED SWITCHED 12V_ ALL RED SWITCHED 12V TACHOMETER OUTPUT IGNITION TRIGGER 1 BROWN BATTERY NEGATIVE BATTERY POSITIVE ENGINE ex gt MODULE aot ECM a 2 N RED SWITCHED 12V IGNITION TRIGGER 5 WHITE IGNITION TRIGGER 6 YELLOW BLUE NO CONNECT C cus 5 H Lam 4 EAE NO CONNECT mm E CUT H EL COIL6 HE 1 MUST GROUND ALL es B HH UNUSED TRIGGER INPUTS Typical 6 Cyl COP wired direct to an ECU without an external Ignitor 8 channel CDI ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 10 INSTALLATION INSTRUCTIONS mm T DG VERY IMPORTANT ENSURE THAT THE TAN COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE BROWN OR BLUE OUTPUT WIRES AND THE PINK COIL 540V LEAD ONLY POWERS COILS TRIGGERED BY THE ORANGE OR GRAY OUTPUT WIRES I ER 1280 L I e BA 280 es EH 280 L T BATTERY NEGATIVE BATTERY POSITIVE IGNITION TRIGGER 1 IGNITION TRIGGER 2 IGNITION TRIGGER 3 IGNITION TRIGGER 4 RED SWITCHED 12V RED SWITCHED 12V ENGINE CONTR
18. What s the difference between a Twin Capacitive Discharge regular Capacitive Discharge CDI and a stock ignition system The majority of stock ignitions are inductive ignitions CDI s produce a fast high energy pulse that is applied to the ignition coil that is over 500 volts and up to 30 amps A standard inductive ignition system typically produces 250 volts on the coil primary This higher voltage is what allows the coil to produce a much higher spark voltage A typical ignition coil 1 100 turns ratio with an inductive ignition will produce about 25 000 volts to the spark plug but using the AEM CDI with the same coil will produce 50 000 volts or more at the spark plug A regular CD ignition can produce full power sparks as long as the capacitor has time to recharge Typically this is more than enough for most engines However if you attempt to trigger multiple sparks in quick succession you will reach it s inherent time limitation This is due to the fact that the typical CD ignition has a single storage capacitor While this cap is recharging or discharging another full power spark is not possible You must wait AEM s patent pending multi cap technology has been designed into the Twin Fire ignition system It has 2 independent storage capacitors They can charge fire and recharge simultaneously This means you can have 2 full power sparks in any relationship to each other including at virtually the same time This means more ignition power
19. eat and a modified engine makes more heat the spark plug must remove more heat A colder heat range spark plug must be selected and spark plug gaps should be adjusted smaller to ensure proper ignitability in this denser air fuel mixture Selecting a spark plug with the proper heat range will ensure that the tip will maintain a temperature high enough to prevent fouling yet be cool enough to prevent pre ignition While there are many other things that can cause pre ignition selecting the proper heat range spark plug will ensure that the spark plug itself is not a hot spot source As a rule of thumb every time you increase the compression ratio by one point or for every 75 100 hp you add go at least one step colder Remember it is better to go colder than is thought necessary The worst that can happen in this scenario is that the plugs will foul out If you inadvertently select a heat range that is too hot the resulting pre ignition and detonation can cause serious engine damage HOT PLUG COLD PLUG SE NCC 5 LONG INSULATOR HOSE SHORT IN Lm ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE 90250 20 INSTALLATION INSTRUCTIONS AEM Electronics Warranty Advanced Engine Management Inc warrants to the consumer that all AEM Electronics products will be free from defects in material and workmanship for a period of twelve months from date of the original purchase Products that fai
20. ifier or ECU Output of Channel 3 Ign 4 input Connect to the Ignition Amplifier or ECU Output of Channel 4 IGP Connect to a switched 12v source It should have power ONLY when the ignition switch is turned on 540V Connects to the positive terminal on coils 1 amp 3 This should be the ONLY wire making contact with these terminals This wire should only connect to coils triggered by Brown or Blue wires coils 1 amp 3 Uses storage capacitor 1 540V Connects to the positive terminal on coils 2 amp 4 This should be the ONLY wire making contact with these terminals This wire should only connect to to coils triggered by Orange or Gray wires coils 2 amp 4 Uses storage capacitor 2 Coil 1 Out Connects to the negative terminal on Coil 1 This should be the ONLY AEM wire making contact with this terminal Coil 2 Out Connects to the negative terminal on Coil 2 This should be the ONLY AEM wire making contact with this terminal Coil 3 Out Connects to the negative terminal on Coil 3 This should be the ONLY AEM wire making contact with this terminal Coil 4 Out Connects to the negative terminal on Coil 4 This should be the ONLY AEM wire making contact with this terminal 8 Channel CDI s have 2 I O Harnesses The wiring on both harnesses are the same so the wiring for channels 5 8 are the same as 1 4 Refer to the following typical wiring diagrams for installations on most 4 6 8 and 10
21. l within this 12 month warranty period will be repaired or replaced when determined by AEM that the product failed due to defects in material or workmanship This warranty is limited to the repair or replacement of the AEM part In no event shall this warranty exceed the original purchase price of the AEM part nor shall AEM be responsible for special incidental or consequential damages or cost incurred due to the failure of this product Warranty claims to AEM must be transportation prepaid and accompanied with dated proof of purchase This warranty applies only to the original purchaser of product and is non transferable All implied warranties shall be limited in duration to the said 12 month warranty period Improper use or installation accident abuse unauthorized repairs or alterations voids this warranty AEM disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by AEM Warranty returns will only be accepted by AEM when accompanied by a valid Return Merchandise Authorization RMA number Product must be received by AEM within 30 days of the date the RMA is issued Please note that before AEM can issue an RMA for any electronic product it is first necessary for the installer or end user to contact the tech line at 1 800 423 0046 to discuss the problem Most issues can be resolved over the phone Under no circumstances should a system be returned or a RMA requested before the
22. oils The AEM Twin Fire 4 Channel Ignition can be used on 2 4 6 or 8 cylinder engines equipped with up to 4 ignition coils All AEM Twin Fire systems will accept trigger inputs from electronic DIS type ignition systems as well as from igniters NOTE lt is strongly recommended that you have a wiring diagram for your specific vehicle before attempting to install the AEM Twin Fire ignition system WARNING Before installing the AEM Twin Fire system disconnect the battery cables The AEM Twin Fire system generates high voltage when power is supplied this voltage is always present when the unit is on even if the engine is not running Improper handling may cause shock or death The unit must be completely powered down when any electrical work is performed on the vehicle This is not a hollow warning a modern CDI possesses enough stored energy to cause serious harm to a person even after the key is turned off TECHNICAL FEATURES 4 CHANNEL CDI TECHNICAL FEATURES 8 CHANNEL CDI Operating Voltage 8 18 volts negative ground Operating Voltage 8 18 volts negative ground Operating Current 7 0 Amps 10 000 RPM Operating Current 12 0 Amps 10 000 RPM RPM Capability 14 000 RPM 4ch 14 volts RPM Capability 14 000 RPM 8ch 14 volts Ignition Inputs 2 3 4 rising or falling edge Ignition Inputs 5 6 7 8 rising or falling edge Ignition Outputs 4 Ignition Outputs 8 Energy Storage Caps 2 Energy Storage Caps 2 LED Indicator Ignition trigger
23. t touch the coil or connect test equipment to the terminals TROUBLESHOOTING Every AEM Twin Fire Ignition system undergoes multiple quality checks including an 8 hour high power burn in If you are having a problem with your Twin Fire it is likely due to improper installation or wiring Please refer to the following while troubleshooting your installation before calling AEM s Performance Electronics Help desk ENGINE MISFIRES An engine misfire at higher rom is not usually due to the ignition Most of the time it is due to a coil or plug wire problem allowing arcing to take place between the plug boot to ground e Check the positive and negative coil connections Verify that all unused ignition trigger inputs are grounded Ensure that the Tan coil 540v lead out only powers coils triggered by the Brown or Blue output wires Ensure that the Pink coil 540v lead out only powers coils triggered by the Orange or Gray output wires Check the condition of the plug wires with extra attention given to the ends Check for a tight connection and look for cuts abrasions or obvious signs of burning e WARNING There will be a very high voltage at the coil positive terminal whenever the key is turned on Do not probe these terminals e WARNING Do not touch the coil terminals during cranking or while the engine is running A severe shock will result CHECKING FOR SPARK Use the following procedure to determine if the ignition is producing a spark 1 Verify
24. that the ignition switch is Off 2 Set the Trigger Edge 52 switch to a rising edge trigger 3 Remove the spark plugs and wires from the engine With the plugs inserted in the end of the plug wires lay the spark plugs against a good ground 4 Disconnect the trigger wire White Green Yellow amp Violet from the factory harness 5 Turn the ignition to the On position Do not crank the engine 6 Tapa trigger wire to a good ground Each time you pull the wire from ground a spark should jump cross a spark plug If a spark is present on all connected channels then the ignition is working properly ADVANCED ENGINE MANAGEMENT INC 2205 W 126 STREET UNIT A HAWTHORNE CA 90250 18 INSTALLATION INSTRUCTIONS 7 lf there is no spark A Check all of the wiring B Change coils wires and spark plugs and repeat the test If there is a spark now one of those components was at fault C If there is still no spark then verify that there is 12 volts on the small RED wire from the AEM Twin Fire when the key is or while the engine is cranking If 12 volts is not present then you have to find a switched 12 volt source for this lead and do the test again D If after following all of these troubleshooting procedures and verifying 100 of the wiring there is still no spark then the Ignition needs repair See the AEM Twin Fire Warranty and component Service section below for instructions FREQUENTLY ASKED IGNITION QUESTIONS 1
25. the Twin Fire is wired directly to the ECU and the Ignition trigger is a digital signal with high signifying dwell time Switch 3 Wasted Spark S3 programs the ignition for use on engines equipped with a single coil per cylinder 720 firing S3 On or dual output coil feeding 2 cylinders 360 firing S3 Off Default PRESTART CHECK LIST e The only wires that should be going to your coil terminal are Brown Orange Blue and Grey The only wires going to the coil positive terminals are Pink or Tan The only wires connected to the factory harness wires inputs are the White Green Yellow Violet The small Red wire of the Twin Fire is connected to a switched 12 volt source factory harness The AEM power leads are connected directly to the battery positive and negative terminals The battery is connected and fully charged The engine is equipped with a good ground strap to the chassis CDI Switches properly set You can now remove the bypass plug and plug in the AEM Twin Fire Ignition system into the harness Start the engine to verify the engine timing is correct and that all functions are operating WARNING The AEM Twin Fire system generates high voltage when power is supplied this voltage is always present when the unit is on even if the engine Is not running Improper handling may cause shock or even death This is NOT a hollow warning Whenever the key is turned on the primary coil terminal is charged to 500 volts Do no
26. with an internal ignitor will destroy the coil as soon as the key is turned on TACHOMETERS The AEM Twin Fire Ignition system features a 12 volt square wave tachometer signal that can be used to drive aftermarket tachometers shift lights or data loggers It pulses 1 time for each ignition trigger signal WELDING Before welding on your vehicle disconnect the AEM Twin Fire Ignition system power cables from the battery Failure to do so may damage your ignition SPARK PLUGS AND WIRES High quality resistor type spark plug and suppression wires are extremely important for the proper operation of the AEM Twin Fire Ignition system Solid core spark plug wires cannot be used with the AEM Twin Fire Ignition system as they will cause excessive EMI which will interfere with the proper operation of the ignition system Attention should be paid to the routing of the spark plug wires They should never be placed near sharp edges or adjacent to each other in the firing order Old physically worn plug wires and boots should be discarded never reused Any rub marks or pin holes in the wire is a serious problem and will cause a misfire when the ignition system is running at its highest energy MOUNTING The AEM Twin Fire Ignition system may be mounted in any position as long as it is not in an enclosed location nor near a large heat source It may not be mounted directly to the engine nor should it be mounted near or above the exhaust manifold s WIRING GE
Download Pdf Manuals
Related Search