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

[Kwanza26]

Just FYI... fuel cut defense or rev limiter removal is considered ECU modification... and isn't legal for stock classes... last I check at least. Anyway... there aren't a lot of easy ways to simply bypass the ecu rev limiter by jumping wires. Depends a lot on the ecu... but the rev limiters are sometimes hard coded and aren't determined by ignition outputs/inputs alone. FYI... for the swap guys that have run into wiring problems... it'll be the situation where you get a bad ignition signals and the ecu cuts out the engine at 4000 rpms... In other words... the ECU NEVER allows higher rpm cut out. If proper inputs for fuel cut function are missing or incorrect... the ecu cuts the fuel at low rpms.

This post has been edited by Kwanza26: Nov 7, 2005 - 11:14 PM