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  1. What Mufflers are you using on your 4BT egnines? Where does your exhaust dump?

    Performance Discussion
    I am swapping mine into an 03 F150 Supercrew. It will be a Family vehicle, and i want to be able to talk while going down the road. It is the XLT package so its pretty quiet, but i'm double layering some foil backed sound proofing material. My initial plan is to use the exhaust from the Chip...
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