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      11-25-2012, 11:37 PM   #6
jra85
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Drives: 2011 E92 M3 ZCP
Join Date: May 2010
Location: Long Island, NY

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I'm pretty confident that the GT is slightly louder than the Performance exhaust. It also drones around 2-3k RPMs, which I don't think is the case with the Performance exhaust.

That said, I have a GT on my car and love it!