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

Alchem · 11-27-2010, 10:40 PM

The higher the octane the more performance you get...if you have a tune.
Race gas is 100+ octane. I dont think 93 vs 91 will make a huge difference. you are not going to get LESS performance from 93. If anything it will be the same.

11-27-2010, 10:40 PM	#16
Alchem Lieutenant 43 Rep 420 Posts Drives: 335xi Join Date: Mar 2007 Location: Chicago iTrader: (0)	The higher the octane the more performance you get...if you have a tune. Race gas is 100+ octane. I dont think 93 vs 91 will make a huge difference. you are not going to get LESS performance from 93. If anything it will be the same.
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