Well, you'd better be interested! The owner of the 1000 hp E85-capable Viper is Karl Jacob, who says, "The E85 Viper project sets out to prove that we don't have to give up high performance cars in order to save the environment. In fact, we discovered during this project renewable fuel performs much better than today's gasoline."
The higher power is to be expected, as cars generally make more power on ethanol. A sophisticated engine computer system allows the vehicle to run on any blend of gas-ethanol, using 93 octane gas on up. Ethanol has a higher octane rating than gasoline.
The first modification was twin-turbos, along with a new fuel system and engine computer. The brakes were also upgraded at that time. While determining the next direction to go, Karl and his tuner, Ron, of SVS Power, decided to go all the way with the car... meaning 1000 HP running on 13 lbs of boost using E85 fuel. This, of course, meant a lot more mods needed to be performed, including to the fuel system, as the Viper was not meant to run on alcohol. Nor was it meant to have that much power, so the whole drivetrain was modified to take the power. You can read the whole story at Karl's site and there's an info chart after the jump.
