How loud are AA headers with stock exhaust?

Spitfire007 · 09-11-2015, 11:14 AM

Thinking of more power on the 09 328.
I hear headers and the AA software are a great way to add power but don't want it to be too loud and obnoxious. Still a family car after all.
How loud are they?

Would consider adding the stage 3 manifold later...

Taskmaster · 09-11-2015, 08:28 PM

Not loud at all, almost stock honestly.

09-11-2015, 11:14 AM	#1
Spitfire007 Captain 189 Rep 682 Posts Drives: 09 328i Sport 6MT Join Date: Dec 2011 Location: Baltimore, MD iTrader: (0) Garage List 2009 BMW 328i [0.00]	How loud are AA headers with stock exhaust? Thinking of more power on the 09 328. I hear headers and the AA software are a great way to add power but don't want it to be too loud and obnoxious. Still a family car after all. How loud are they? Would consider adding the stage 3 manifold later...
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09-11-2015, 08:28 PM	#2
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	Not loud at all, almost stock honestly.
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