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J08M3 · 01-31-2010, 07:29 PM

I really like my AA exhaust. I have it with HFC's and X-pipe so it's louder than just axle back and there is not really much drone. It's fairly loud though. I would never do an ECU tune for 14hp though, too many risks, and hardly any gain.

01-31-2010, 07:29 PM	#4
J08M3 Major General 286 Rep 6,007 Posts Drives: 2011 M3 COUPE Join Date: May 2008 Location: NEW YORK iTrader: (8)	I really like my AA exhaust. I have it with HFC's and X-pipe so it's louder than just axle back and there is not really much drone. It's fairly loud though. I would never do an ECU tune for 14hp though, too many risks, and hardly any gain. __________________
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