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      12-03-2012, 05:24 PM   #3
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BenDiem's Avatar
Drives: '13 X3 35i MSport; '13 128i
Join Date: Mar 2011
Location: SW Ohio

Posts: 102
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^^^ OP, look forward to reading your honest review/opinion of the change. I'm on the fence with the purchase, myself. I love ear candy, but I would be annoyed if the PE would lose considerable low end torque.

Generally, all open (flow through) exhausts offer less back pressure, which would compromise exhaust scavaging, and thus would lower low end torque.

The OEM specs say you gain 5 hp & 3 ft/pd of torque @6600 rpms. I could believe that, but I'd hate to lose more than that, where we typically drive, below 6600 rpms.

Enjoy and Good Luck!


Last edited by BenDiem; 12-03-2012 at 05:41 PM.