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      08-07-2011, 11:29 PM   #8
DemonEye
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Drives: 2012 M3 Coupe ESS VT2-625
Join Date: Jul 2011
Location: Charlotte, NC

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2010 135i Coupe  [0.00]
2012 M3 Coupe  [0.00]
Stock Xpipe

Quote:
Originally Posted by John@RimierMotorSport View Post
Here is my car with the Innotech cat bypass, Innotech X-pipe and stock muffler. If you retain the stock muffer, there will be rasp no matter what.

The Turner test pipes just delete the primary cats from what I understand but please correct me if I am mistaken. That should leave the secondary cats and oem resonators in place since the oem x-pipe is still there. This setup (stock resonators in place) should help with the rasp compared to your setup with the Innotech X-pipe wouldn't it?
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