piping diameter match-ups?
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Joined: Jan 2003
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From: Straight, ATL hoe, best kno
piping diameter match-ups?
I have the junk DC usdm header, lookin to go 2.5. If I get a 2.5 header with a 2.5 inlet/outlet carsound cat, will it match up to the 2.25 greddy evo piping? Or do I have to get a 2.5 inch b-pipe?
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