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Old 04-20-2009, 09:27 PM   #1
Scooby Newbie
Member#: 190590
Join Date: Sep 2008
Default 02 WRX starts then dies after a backfire

02 WRX with headers, catless uppipe/turboback, Grimmspeed EBCS, AccessPort and Clark Turner e-tune. Had a very loud backfire after shifting into fourth, the car then began stuttering and soon died. Car starts but will not idle, I was able to keep it running while at a stand still but under hard throttle it would stutter, fight back, and the RPMs would not rise. I could tell by the smell of my exhaust that it was running extremely rich. My AFRs were reading rather spurratically, jumping between 15 and 11 while holding the throttle steady - so I assumed bad o2 sensor(s). Yet no CEL? Is this because the AccessPort blocks these codes, similar to blocking the misfire code? Any thoughts?
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