dissconected the iscv at the grey plug and no difference. Sprayed every surface on the intake side with aerosol and it does not increase revs. maybee the spray is not a sure way to tell for intake leaks. Just been out in her and it still pulls like a train under full boost with no hesitation. I checked the plenum screws today and the butterfly plate is solid. Checked for obstructions keeping the plennum open but found nothing. Its a mystery.