Any one help I need the info on which pin does what on two ecus.
One is from a xr3i efi and the other is a 130bhp 3i mk4.
Doind a zetec conversion and having probs with wiring . Only got 8 ires to sort lamda etc. Do i need to run lamda as not using cat? I asume i do as using the standerd ecu.

thanks