Thread: Test Pipe?
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      10-24-2012, 11:23 AM   #173
Super Sic
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Drives: E90 M3
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Quote:
Originally Posted by HREM3 View Post
Sound Wise...Would going TTP be the same as the Challenge Sport X-pipe? I think Challenge uses 200 CEL Cats where our secondaries are, and I know our secondaries are 200 as well.
No first hand experience, but I've read a few threads that report the TTP setup being much quieter than the Challege Sport setup... has something to do with the thickness/weight of the stock pipes, and possibly the resonator size.