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Old 09-05-2008, 02:34 AM   #2
strsi
Registered User
 
Join Date: Jun 2008
Location: ca
Posts: 28
My Ride: 2000 328Ci
the aa exhaust is a muffler, with a little bit of piping attached to it.
it is not a cat.

Replacing the rest of the stock exhaust piping will net u very minimal power gains. but deleting a resonator or both will increase sound.

Check out my post, i got the aa exhaust not long ago http://forum.e46fanatics.com/showthread.php?t=598086
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