BMW M3 Forum (E90 E92) - View Single Post - Thinking about an x-pipe...

elim11 · 03-01-2013, 01:04 AM

Lots of good info. One question. In terms of loudness and exhaust note quality (which I understand is subjective), how does test pipes compare to resonated HFC X-pipe? Is it like 70% of the sound/loudness?

03-01-2013, 01:04 AM	#17
elim11 Major 424 Rep 1,325 Posts Drives: e90m3 Join Date: Apr 2008 Location: irvine/sf iTrader: (13)	Lots of good info. One question. In terms of loudness and exhaust note quality (which I understand is subjective), how does test pipes compare to resonated HFC X-pipe? Is it like 70% of the sound/loudness? __________________
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