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      11-14-2011, 03:30 PM   #8
Drives: L322 RR, E90 335i
Join Date: Oct 2008
Location: CO - 6500ft ASL

Posts: 675
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Interesting - do you have a tune to take advantage of the additional octane (e.g. Advancing the timing)? Or do you see a difference even stock? If so, what blend are you running?

If you do half a tank of E85 and half a tank of E10 (regular gasoline) that means you'd be running around E48 or so? Almost 50% ethanol? I've never thought of doing that to increase the octane - intriguing.

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