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  1. Lean After LT Header Install (Shocker) Now What

    5.7L V8 Specific Topics
    Iv'e got 2 codes P0133 and P0153 O2 sensor(s) slow response. My theory is, if its slow to respond, the A/F Ratio is not switching from Lean to Rich like it should and is just staying Lean. But shouldn't it just give me lean code? I have data logged and it seems to be adding 18-20% on the fuel...
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