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Old 09-22-2015, 11:48 AM   #69 (permalink)
Chuck33079
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Quote:
Originally Posted by Push370zzz View Post
Yes. E85 has about 72% as much energy as an equivalent gallon of gasoline. E10 should have about 96%.



The drop in energy content is very close to 30%. E85 is absolutely better for power, particularly in boosted applications, due to what you pointed out. That said you are just not going to get better or even close to the gas mileage you'll get on regular gasoline or E10.

E85 vs. Gasoline Comparison Test

https://en.wikipedia.org/wiki/Gasoli...lon_equivalent
Right. So if someone is claiming the same, if not 1-2 miles per gallon improvement, they are in error since it would not be possible to get the same mileage on a fuel that has less energy by volume. Maybe he's looking at the mpg gauge which is now wrong due to different injectors?

I'm also unclear how someone can claim a power improvement from going to E85 without any timing adjustments. Can someone explain how that works? I'm at a loss.
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