This is the parts kits used to Add OBD1 Style (ECU grounds) IAB control to your 11F0 or 1720 Board P05, P06, PR4 or P28 ECU.

IABs or Secondary Intake butterfly valves are used on Stock GSR and Stock H22 intake manifolds, please read our write-up in the Tech Center about this and how to install these components to your ECU.