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      09-26-2012, 09:50 PM   #23
WilliamS
GoofBall
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Drives: 2008 E92 N54 Xdrive
Join Date: Jun 2012
Location: Tampa, FL

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Ethanol burns at roughly 150% that of the rate of 93 octane. So 93 octane we will use simple numbers would need 10 gallons to drive 1 hour. Where at E85 would use 15+ gallons on that same run. Becuase of this you need the pump to push more fuel up to the engine in the same amount of time.

So in short, you need to move more liquid with E85. Need higher volume fuel pump to keep up. This also helps if you are running say 93 octane becuase now you have more room to flow more fuel for more power.