[KawBoy]

Originally Posted by DSilk

The following is from High Octane Racing (proponents of E85):

E85 on average produces around 25 Mega Joules of Energy per litre of fuel, while normal 98 Octane petrol will normally produce in excess of 33 Mega Joules of Energy per litre so for this reason alone we will always use much more E85 fuel to achieve the same result.

Because of the requirement for much higher fuel consumption it is normal practice to replace the whole fuel system in a performance application with much higher flowing components. If you required 600cc injectors and a 250litre per hour fuel pump with petrol, then it is fair to assume you will need at least 1000cc injectors and closer to 450 litre per hour fuel pump, but normally it is safer to go even bigger because as discussed earlier, you can now run even higher boost which in turn will require more fuel again. We highly recommend the Injector Dynamics brand of injector that come as a matched set.

The long and the short of it is that it is possible to extract more power from E85 than from plain petrol, but it isn't as simple as just filling your tank with E85.

THIS