BMW M3 Forum (E90 E92) - View Single Post

pbonsalb · 02-01-2013, 07:55 PM

Most are 2.5 inch. Dinan uses and uncommon size for exhausts, 2.75. For a naturally aspirated car, 2.5 is fine. For a supercharged car making 600 rwhp, I would prefer larger than twin 2.5.

02-01-2013, 07:55 PM	#27
pbonsalb Lieutenant General 5258 Rep 10,633 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Most are 2.5 inch. Dinan uses and uncommon size for exhausts, 2.75. For a naturally aspirated car, 2.5 is fine. For a supercharged car making 600 rwhp, I would prefer larger than twin 2.5.
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