Quote Originally Posted by h100vw View Post
IIRC the signal from the hall sender just goes high and low in time with engine rotation. The ECU looks at either the rising or falling edge of the square wave.

Maybe you can trigger it off the feed to the coil? Pin 25 on the ECU according to that a2resource.com?

Gavin
Cheers mate, ill try that when the weather improves but i think that means i will have to change the input point on the board.

Heres a pic: