[Lazerbrainz2k3]

Originally Posted by The Black Stig

As far e-85, if you wanna make power it's the new fuel of champions... I can do the same power and slightly better on e-85 as i can do on c16 race gas.

e-85 has a minimal octane rating of of 100 and up to 105, pump e-85 is mixed with 85 octane as will, making your own ethanol(with the blessing of the A.T.F.) and mixing with 93 octane+ leads to much better results, that and an e50 blend works better of D/I and d/i turbo cars as you do not need flow as much fuel, and it has nearly the same octane (usually one point lower), but it has an slightly higher stioch. so you can't run as lean.

Verdit
E-85 on dd boring ass cars FAIL x2 if there "flex fuel"

E-85 with an proper tune and even slightly modded.... Win

"There is no requirement to post octane on an E85 dispenser.
If a retailer chooses to post octane, they should be aware that
the often cited 105 octane is incorrect. This number was
derived by using ethanol’s blending octane value in gasoline.
This is not the proper way to calculate the octane of E85.
Ethanol’s true octane value should be used to calculate E85’s
octane value. This results in an octane range of 94-96 (R+M)/
2. These calculations have been confirmed by actual octane

engine tests."

http://ethanolrfa.3cdn.net/dd9e74ce1..._rbm6bdgh3.pdf