hi all i have read that i can swap the wire from A20 (EVAP purge solenoid) to A17(IAB) on a p72 obd1 ecu to activate the IAB's i was wondering if anyone had anymore info on this... does the p72 need the evap purge solenoid? would it not be better to run a hard wire from iab to A17? i am running a B18C4 uk spec with D16Z6 loom from ecu to engine. thanks in advance for your advice! mike.