Hello, thanks for the add. 87 Lx SSP, did mass air flow mod, A9L with supercharger, car was tuned and runs great but does have a surge at idle or at red light. New fomoco iac, tuner is saying the ecu don't know its surging...when viewed in laptop. Sure yall might want more info how car is set up but does anyone have experience or have seen these cars do this? Thanks for any feedback!