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      03-22-2013, 02:11 PM   #15
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Drives: 2015 MW M3/2014 Boxster S
Join Date: Jun 2007
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Originally Posted by kitw View Post
I've found that resonators do cut down on the rasp somewhat, but not completely. I really don't think removing the secondary cats is worth it, I think it's always better to remove the primaries with a $400 test pipe.

This is what mine sounded like (BMW Performance exhaust + Turner test pipes)

I thought it was too raspy.
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