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      01-27-2012, 11:55 PM   #5
sA x sKy
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Drives: AY/B M4 '15
Join Date: Apr 2010
Location: Long Island, New York

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2015 BMW M4  [0.00]
Originally Posted by cn555ic View Post
The reason why it rasp is the midpipes have an h-pipe connection as suppose to a x-pipe union. The Vangaurd has resonators too and it still rasps like the OP stated which is poor design. It sound very deep and throaty for sure, but if you go catless dps, the h-pipe at the midpipes do not cancel out the rasp.
When MAC installed my exhaust, they used the stock midpipe instead of fabricating a new one which is what Matt@Camber-Toe would have done. Since I still have the stock midpipe, maybe that's why my car doesn't rasp that much?