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      12-27-2012, 09:21 PM   #7
paradocs98's Avatar
Drives: 2014 991 Carrera S
Join Date: May 2009
Location: NY

Posts: 1,342
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Originally Posted by MikeE92M3 View Post
Yeah, I too noticed that my "whole" car seems to rumble a lot more, especially when it is started cold. When it is warmed up and idling, I can't tell a difference from when it still had the cats on.
That's the great thing about it--not significantly louder at idle or light throttle when warm, but when you start opening those throttles, Yowza!
IB E90 M3 ZCP returned to BMW FS
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