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roddyc · 05-22-2013, 08:40 AM

How much louder is the test pipes + MPE than the MPE alone under 4k rpm? Any droning that wasn't there with the stock cats? And how much more rasp is there over 4k?

I want to do it but I'm scared lol

05-22-2013, 08:40 AM	#6
roddyc Second Lieutenant 24 Rep 287 Posts Drives: 13 BMW M5 Join Date: Jul 2011 Location: Frisco, TX iTrader: (8)	How much louder is the test pipes + MPE than the MPE alone under 4k rpm? Any droning that wasn't there with the stock cats? And how much more rasp is there over 4k? I want to do it but I'm scared lol
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