You will actually have LESS power, and LESS efficiency from E85.
And the ACTUAL rating of E85 is actually about 94.
Don't waste your time. E85 is a joke, and it's only around because of government forcing it, by the representatives from "corn states", and lobbiests.
Don't believe everything you see on TV. Do the research first, and don't buy into the hype.
This article is a good place to start. http://en.wikipedia.org/wiki/E85