Since Conversion OBD2b to OBD1
Is it necessary to change it IACV into one of 2 wires???
Since the wired up one adapts ????
Regards
An OBD1 ECU WILL NOT work with a 3-wire IACV. If you want to retain the function of the IACV, you must switch to a 2-wire IACV.