I had this problem pop up a few weeks ago but today it's very worse...
Under light acceleration around 4,500 RPM or so the engine would lose power and make a stumbling sound. Today it was happening at any increase of throttle that would kick in some boost. While it was making the stumbling farting sound I noticed that the boost gauge would peg.
Before I thought this was a bad O2 sensor or maybe a need to replace the fuel filter but now it seems like something to do with the supercharger? I do have a constant SES - P0440 for my evac system that I have not fixed yet. Could they be related? Something else???
Mods:
COMP Cams Xtreme Energy camshaft: 76-801-9
COMP Cams valve springs 26918-12 and retainers: 774-12
SLP Performance Supercharger Pulley, 3.50 diameter: 100227A
e3 Spark Plugs: E3-62
Summit DIS coils: 850017
MSD Super Conductor Wire: 32789
