Quote:
Originally Posted by BirdTRD
Any other mods, like a header? I would start looking for vacuum leaks and/or exhaust leaks particularly in the exhaust manifold area. I had p0171's due to a vacuum leak, the ECU interpreted it as being too lean and kept dumping more fuel in causing the raw fuel smell.
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Just a cat back and the Perrin inlet tube with stock air box, which I have been running in conjunction with OFT tune for 50k+ miles with no issues. I'll check again tomorrow afternoon its such an odd thing that's happening. It seems too run fine under steady throttle then start to dump full when I'm off then back on throttle, which is when I see it hunt for AFR and fuel trims start to rise. Car has 98k miles now. Haven't swapped o2 sensors yet.
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