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  1. Swap and Forced Induction
    OK folks, I want to finish out my 3" exhaust setup for the old boosted D17. and I need a little advice of which muffler to go with. Here's my current setup that isn't going to change: - 3" downpipe mating up to a 3" (in/out) Magnaflow cat - open dumptube That plugs into a 2-1/4" NA catback...
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