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  1. Fake Dual Exhaust

    General Technical Chat
    I have a Magnaflow cat-back exhaust on my Focus right now, and I just put a new rear bumper on the car from a body kit I purchased, the way the bumper looks makes me want dual exhaust, or at least 2 exhaust tips sticking out.. I was wondering what would happen if I put a Y-pipe on the rear side...
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