Rev Limiter kill switch/ working around the ecu, Adding variables to a factory ecu Options

[Agent21]

Ok so I know there is a happy little pulse width modulation signal that goes to the ECU to tell it how fast you are going. I have heard this is a purple wire with white tracers. I have heard you can cut this wire or add a chip to reduce the pulses and lie to the ecu. I know it triggers the cel but I have suspicions it throws the ECU into safety mode as well. Anyone got better info?

This post has been edited by Agent21: Nov 8, 2005 - 11:22 AM

[Agent21]

Well I don't have any pictures of it at the moment. It pretty much looks like a stock 86 coupe in retro TRD paint sceme. Minus the 4" nascar style spoiler on the back (no we really needed that other wise the car has wicked unpredictable over steer). The engine 3SGE 2nd gen has and has to remained fairly stock (for this season ideas in the works for next year) The intake and piping for it is still factory and has to remain that way, we even have to run a paper air filter. The exhaust is full straight pipe. Engine runs leaner then you can imagine. All accessories are off the motor minus the alternator. The Ecu needs to be worked with. Not just for this engine to get the air fuel and the timing more adjustable but also for the motor in the works. I have a 3sge ecu on the way to me so I can fiddle with it. But I need people who know the ecu a little better then me. This is the only front wheel drive circle track racing celica in the South Eastern US and possible the counry so it is very difficult to get data and we have had to do a lot of work blind. Please help. We got 5th in the Championship this year (the teams first full season) and the car is very good but needs to be faster.