Ok I have a 2006 zo6 I had tuned and now the o2 sensors are doing funny things. If u watch the logs I did ull see the o2 are working fine then all the sudden they drop to almost 0 and the car start surging. Has anyone had this problem. Car just started doing it after the tune. Car has heads, cam, msd intake, varram cold air, and ported 90mm.
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