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  1. S

    stubborn SES light costing me a lot of $$$

    ok, so I have a 99 GT, put a Steeda cat-back on about a month ago, about a week ago had a Magnaflow cat'd X installed. After I got the car back the service engine light soon popped on. I went back to the shop, they scanned it, front passenger side O2 sensor is reading lean, they tighten them all...
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