Originally Posted by
Karlos G
Are you sure mate?
It only retards the ignition if the little piezo mic 'hears' Knocking/Detonation which generates a small voltage and signals the ECU, if it's not connected or isnt present then it cant 'hear' anything, the ECU doesnt receive any voltage (signal), and the timing isnt retarded.
Karlos.
Doesn't work like that i'm afraid. The ECU interupts no signal as knock as well - it's a real pain, as they often play up and retard for no apparent reason. That's why you can't just disconnect them, and a good mod for the S2 is to put in an S1 ECU, but you can't do it the other way round.