Quote:
Originally Posted by 9vapors
They're about 2 months old, basically new since I don't drive the car much. It's an x5M, no MAF sensors. I can try to swap it back and see if it goes away.
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Ha iv'e never see that on a BMW. The M5 has a MAF sensor but now that you guys say that i remember pulling my air boxes off with no sensor. Maybe he damaged on of the O2 sensors, this happened to me when I did my downpipes. I have a Velos tune as well.