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      03-08-2009, 01:54 AM   #13
mixja
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Drives: 2011 E90 DCT Silverstone
Join Date: Jun 2008
Location: Beverly Hils, CA

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My question is which fuel gives the best performance - straight 93 Octane fuel, or 93 Octane fuel that has 10% Ethanol.

Over in Australia I've seen articles where tuners have found 98RON with 10% Ethanol can make more power than pure 98RON as you can advance ignition timing more.

Thoughts?
Appreciate 0