Which pin do you ohave to switch out to use the one wire?The paper says A8 and that is what I did however it made that priming sound when you turn the ignition on but only this time it stayed on? Are you supposed to splice in the existing a8 wire with the new vtec wire? My car was wired for vtec previously with a pr3. Or to run vtec with my zdyne i need to connect the ecu were they ask to use vtec?

 

If it ran VTEC with a PR3.. the Zdyne isthen plug and play.

A8 is run from the ECU harness to the VTEC solenoid.