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unneeded smog equipment

  1. Engine Strip Down Version f150 I6 4.9

    4.9L l6 Specific Topics
    Greetings, I have a 1989 F150 I6 4.9 that no longer needs to be tested by the state of Oregon for smog equipment. The vehicle is exempt from state smog requirements. My question is what equipment can I remove, without disturbing the integrity of the engine, that is no longed needed as a...