jmcpower

Thanks for the nice detailed explanation . Engine Power used to be 700+hp with 680nmtorque and now aiming for 800+ hp . with 800nm torque On tire size i cant go any wider ... using 12.5inch wide Avon slicks. Center diff is upgraded with 450nm viscous enough to transfer 56% of the engine torque to the rear axle ( probably not as good as the Evos center diffs with electro hydr. control) ...front and rear diffs are disc type LSd ! The car handles the 700hp very nicely on a nice tarmac road with bearly any straight line wheelspin on 2nd gear ...but as i said when the tarmac is dusty , uneven with bumps, or wet , or even a combination of all these then things can easy get out of hand and reducing power /torque makes things easier and the car is faster during the race ! the ultimate would be a nice traction control (: But as you said and totaly agree with you i have to get some data of each wheel speed and slip and then decide which way to go ! Thanks once more , Regards, mike.

For example , a tarmac hill climb event with parts of the road being dusty, others dry with good traction and some parts of the road wet,! These conditions are very often seen on Hill climb events on the same run , and can be at a launch , straight line , high speed turns or even low speed turns and hair pins ! Power management for Dry conditions would be good for dry but not good for wet conditions and vise versa...so we are trying to get the best out of it as much as we can ! On a 4wheel drive the rate of change of the probshaft would indicate slip on the rear axle if the speed of the axle increases more than the acceptable rate...but the same can happen if all four wheels are slipping at the same time. This is where you need a reliable and acurate speed sensor to have as a reference so the system can compare each wheel speed to the true vehicle speed. ( this is my personal opinion as i do not know excactly how these sytems work) If we could have a reliable speed reference and also each wheel speed sensor to be compare to that speed reference for any possible difference during the race, then we could probably manage-reduce the torque to reduce the slip to an acceptable rate. Thanks , Mike

Hi Adam, My appologies for late reply , The Sensor was 1600 us$ when i last aked. I was hoping that Thunder would have an option at the speed sources conf. for each of the 4 wheels max to be compared with the speed sensor input ? Pobably will need to have a Dinput separately for this radar sensor ...this way probably would have covered any possible wheelspin on a 4wheeldrive car from any of the 4 wheels. Is there Anyway we can configure the Thunder ECU as i mentioned above ? Thanks , Mike.

Thanks Adam for all the help , Best regards, mike.

Hi Steve, Sorry I meant to write Dwell...(: Below are the specs for the Ignition coils that i will be using . I have filled up the Dwell table with a max 8.5ms and no more than 40% duty cycle at any rpm /voltage range with my Coil per plug set up. Between 1000 and 2000 rpm where the engine will spent more time (idle) I have reduced the Dwell time to 4 ms so to keep the coils slightly cooler and increase reliability. Will spark duration on Ignition Main correspond to Arc Duration: 2.9mS +/- 10% as seen below ? Also having the coils 1 inch close to the fuel injectors , could this cause any kind of interference ? Thanks in advance for all your help!! Mike. Output (no load): 40kV minimum Output (50pF load): 40kV +/- 10% Output Energy: 103 mJ +/- 7% Peak Secondary Current: 102 mA +/- 10% Arc Duration: 2.9mS +/- 10% Turns Ratio 71:1 Maximum Current: 19 Amps Maximum Battery Voltage: 17 Volts Base Dwell: 3.0 mS Max Continuous Dwell: 9 mS but don’t exceed 40% duty cycle Max Intermittent Dwell: 80% duty cycle, 5 seconds maximum Mating Connector: Packard/Delphi 12162825 “Pull to Seat” Mating Contacts: Packard/Delphi 12124075 “Pull to Seat” High Tension Wire Terminal: HEI “spark plug top” Styl

Thanks Adam , Do you by any chance have a duel table for the AEM 30-2853 inductive smart coil ? Thanks in advance , Mike.

Hi everyone , I would like to ask if a reluctance type sensor , two pin wiring plug will be good for my high rpm turbo 4 cylinder application. Max rpm will be 9800, I am using the Link Thunder ECU with full dequential staged modeled injection and coil per cylinder (AEM 30-2853 inductive smart coil). The motor is a Lancia Delta Integrale 4 cylinder 2.0l with the cam sensor fitted on the distributor which will be now used only as a cam reference case holding the cam sensor as shown on the pictures below. It has two reference points and i will grind off one of them so i can use the following tuning specs on Trigger 2 : cam Pulse 1X For Trigger 1 crank sensor i will be using a magnetic reluctor sensor with a 60-2 trigger wheel . Same as used in the past for Electromotive Tec3r ecu. I am aware of the synchronization of the two trigger sensors needed by Link thunder ecu and this is taken into account . My question is if this type of cam sensor will be good for a high rev application 4 cyl engine? Thanks in advance , Mike.

Hi Adam , what if i will be usuing 4 bar basic fuel pressure , waht would be the the deadtimes table and short pulse width adder tables ? Thanks in advance , Best regards, Mike.

I am also using Ev14 Bosch motorsport 980cc @ 3 bar Basic Fuel Pressure with part number 0 280 158 040 , will the deadtimes table and short pulse width adder tables in the base map labelled "G4+ Storm Black Sample.pclr" work for these injectors ? Thanks in advance ! Mike.

Hi Adam , thank you very much for your reply ! I have a couple of more questions (I am New with Link ecu) , is this sensor compatible with the speed GPi of Thunder ecu ? Please find the sensor specs below : 0 to 5 V square wave, differential or single ended 62.1 pulses per second for every kilometer per hour of speed measured (100 pulses per second for every mph of speed measured) And what would be the aproximate starting calibration setting and other parameter (pull up ressistor) settings so it will read correctly the speed ? Thanks in advance , Mike.

Hi , how can you use this speed sensor input with Thunder ecu and confiqure so you can have a speed comparisson with all 4 wheel speed sensors ? And then how can i get the ecu to trigger the traction control based on this speed diference /slip? Is this possible o do with the Thaunder ecu? Or do i need some other external module ? Thanks in advance ! Mike.