Thread: ISF Exhaust?
View Single Post
      05-05-2012, 10:55 PM   #4
M3Denver
Lieutenant
M3Denver's Avatar
7
Rep
423
Posts

 
Drives: 2011 BMW M3
Join Date: Mar 2012
Location: Denver CO

iTrader: (0)

Quote:
Originally Posted by lthai
So I was able to test drive a stock ISF today and I noticed that once the car was moving at around 65-75 MPH the exhaust note changes and gets really deep and loud to point where I could feel it in my ears. I'm just wondering what makes this happen and I could get a similar effect with an M3.
That and the pipes in
The back are fake ....