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Old 10-14-2008, 10:19 PM   #2
Bimmer Dude Xi
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Join Date: Jul 2008
Location: Staten Island, NY
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Originally Posted by zk369 View Post
Looking to upgrade my exhaust on my 328ci and add a little power. Interested in the AA Gen 3 High Flow, but a friend told me straight pipes will get the same sound.
Question is will the straight pipes add any hp?
Also what other exhausts would give a deeper sound and power increase?
Not many cat back exhausts will give an power increase really. If you do headers, it's dynoed to add about an extra 15hp.

Straight pipes with stock muffler will give an deep aggressive sound but no power increase.

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