Ford Mustang Forum - View Single Post - X pipe help
Thread: X pipe help
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post #7 of (permalink) Old 09-23-2015
pwrful4
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Joined: May 2014
Location: Niceville
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The angles that come off the cats aren't a perfect 90 degree, hard for the aftermarket folks to make a perfect fit piece. The factory piece has the flex pipe in the h-pipe for this reason. Factor in manufacturing variations on both ends and wahla, exhaust leaks. Granted they disappear after the pipes heat up and expand, but I don't like startup leaks...
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