BMW M3 Forum (E90 E92) - View Single Post

Jerain · 01-30-2013, 02:14 PM

Just keep the full OEM exhaust but replace the first cats with straight pipes. Sounds good but not too loud, best power gains. Oh yeah, also cheap if you know a good welder.

01-30-2013, 02:14 PM	#19
Jerain Second Lieutenant 72 Rep 202 Posts Drives: E92 335i 6MT Join Date: Nov 2012 Location: Europe iTrader: (0)	Just keep the full OEM exhaust but replace the first cats with straight pipes. Sounds good but not too loud, best power gains. Oh yeah, also cheap if you know a good welder.
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