BMW 3-Series (E90 E92) Forum - View Single Post

Terry335 · 03-23-2007, 09:27 PM

Less area but also less surface area, I've found 1 3" pipe flows better than dual 2.5" pipes in a few combos over the years.

03-23-2007, 09:27 PM	#3
Terry335 Banned 96 Rep 2,587 Posts Drives: 335i Join Date: Jan 2007 Location: Socal iTrader: (0)	Less area but also less surface area, I've found 1 3" pipe flows better than dual 2.5" pipes in a few combos over the years.
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