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I removed my tune (chip) and my car almost passed (failed on technicality...should pass tomorrow). It was not the egr (tested the unit per Haynes Manual). When I smogged the car after taking out the chip it passed (just bearly). Failed because the ECU didn't register a "history" (had to unhook battery to take chip out). Should pass tomorrow.
I just read that your problem may be fixed by a new egr valve o2 sensorsand high octane gas.There is alwaysTHE OTHER WAY OF PASSING.Just a thought good luck