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Geokoppmann:
Your enthusiasm is evident, and your interest in the environment is commendable. However, I wonder why you are seeing a drop of only 2 mpg when any chemical engineer will tell you that volumetrically, ethanol has about 26% less energy content. E85 should, therefore, have approximately 22% worse fuel consumption. While the AKI, or octane, is higher, your engine can not take advantage of that without remapping. So, something doesn't add up.
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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03-18-2007, 09:38 PM
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