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Message: <blockquote data-quote="YUNG VEEZU" data-source="post: 1028524" data-attributes="member: 11262">My check engine light has been on for sometime, the previous owner had an off road mid pipe on the car but since I had to smog it I switched it back to the stock mid pipe. I've had my Cobra for about a month now and 2000 miles later the light popped on and I've pulled up four codes - PO171 twice and PO174 twice. My buddy told me I may have an issue with my MAF and O2 sensors. I've already used MAF cleaner and carefully cleaned the MAF sensor, so far the check engine light still comes on after a few miles. Any help would be appreciated</blockquote>