2002 firebird tuning?
09-23-2009, 10:19 AM
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2002 firebird tuning? is there some software updates for tuning? has stock PCM that was reprogrammed..............the car was running great but now is running rich and fouled spark plugs (no codes) seems to misfire at cruising speed wants to die at idle like it is loading it up....... the motor is Ls1 with everything on it to convert to Ls6
