BMW M3 Forum (E90 E92) - View Single Post

alpina527 · 04-26-2010, 12:20 PM

The rasp stems from the design of the exhaust ports and valves. Some exhausts will almost nulify the rasp, but it's still there whatever exhaust you fit

04-26-2010, 12:20 PM	#11
alpina527 Banned 60 Rep 638 Posts Drives: 2008 E92 M3 DCT JZB/FR Join Date: Jan 2010 Location: London, England iTrader: (1)	The rasp stems from the design of the exhaust ports and valves. Some exhausts will almost nulify the rasp, but it's still there whatever exhaust you fit
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