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NoDOHC · 09-09-2009, 08:48 PM

Does your boost gauge read correctly? If so, I doubt that it is your MAP sensor.

Check your AFM to make sure that it is level. Put a gauge on your fuel pressure so that you can watch it from the cab.

It could also be a faulty BOV (leaks only under boost) this usually makes the engine run very rich. (Leaks under vacuum make the engine run lean.)

09-09-2009, 08:48 PM	#7
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	Does your boost gauge read correctly? If so, I doubt that it is your MAP sensor. Check your AFM to make sure that it is level. Put a gauge on your fuel pressure so that you can watch it from the cab. It could also be a faulty BOV (leaks only under boost) this usually makes the engine run very rich. (Leaks under vacuum make the engine run lean.) __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)