super red91
Registered User
I have a 91 5spd , all bolt ons, MPII sc with 5% pulley, fmic, 42# injectors, 255lph fuel pump and full exhaust (no converters). When the car gets to about 3k im making 10psi and nothing more all the way to 5k. It seems as soon as it hits 10psi that theres just no more power there. Ive already changed plugs, have new wires, and my vaccum is normal. I also have the T-bolt clamps on all my ic connections so i know that there isnt any boost leaking there. I replaced the tensioner for the sc belt and the belt is tight and not slipping. The only thing i know of thats wrong with the car is that it needs a new iac. Anyone know why my car is acting like this?