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need to know two wires

Posted: Mon Jun 30, 2008 6:46 pm
by bmxkelowna
RPM Signal
Ignition signal.

in the ecu which wires are these?
im wiring in a bee*r revlimiter and need to know thanks

Posted: Mon Jun 30, 2008 7:15 pm
by skid542
http://www.graphics.cornell.edu/~v/ecupins/

I am not sure how the ECU derives the RPM, if it's from the crank or from the cam - would assume the crank. I am also not sure how the ignition system works, but the above link has all the pinouts for the ECU.

Posted: Sun Jul 06, 2008 5:04 am
by Legacy777
RPM limit is hard coded into the ECU. You can only modify that rpm limit downward, and you modify the two ignition signals going to the ignitor/coil.