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      06-02-2009, 06:00 PM   #14
dcstep
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Drives: '09 Cpe Silverstone FR 6MT
Join Date: Nov 2008
Location: Colorado

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2009 M3  [4.20]
BTW PG, what do you think about my octane issues? These are all low or no ethanol fuels (under 10%). First I tried 105 octane and lost significant hp and 100 octane is still losing, but I'm not sure how much yet. Do you think the high altitude and low atomospheric oxygen, combined with the higher flash point may be what's losing power vs. the gains you experienced at sea level??

What do you think of my plan to mix a little E85 with 80% 91-octane?

Dave
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