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  1. Kevmore007

    O2 sensor low voltage

    When I flog the old girl around a hundred miles an hour, foot to the floor, I am getting two codes for O2 sensors under voltage. No codes ever if I drive normal.
  2. Kevmore007

    Flowmaster Cat outlet flange size

    Hey everybody! I was hoping someone on here has some experience with the stock exhaust system on these trucks. My c1500 had a stock muffler that had a very large 3 inch flange on it that bolted up the the converter. I got a new Flowmaster cat that came with a huge flange, I am having a hard...
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