10-19-2007, 02:46 PM
E85 is insane for turboed applications and guys with the ability to tune their own setups. As long as you have a plastic tank (no metal tanks need apply unless treated) and run without rubber seals your good (most aftermarket injectors and lines run viton seals). Also if you have an aluminum rail, it may oxidize, but most people are saying there does not seem to be any effect, but scientifically there should over time.
Now down to E85, its energy is that that 30-33% more must be run to get that "bang" from gasonline. Therefore think of your system like this.......650cc injectors are now down to about 450s, your walbro 255? Damn close to a walbro 190 in terms of power output. You run into having to run larger lines than you would otherwise.
However the benfits to this are insane. First of all, E85 has an "effective octane rating" of about 108. It also burns cooler lowering EGT and engine temps which is why I have been looking to find this stuff near the track or near me, much less expensive for an equivalent race gas that will ironically make the engine run cooler AND with less harmful emissions.
Oh PS, E85 cleans shit out real good, so after your first tank of E85 it is highly suggested to change out your fuel filter from all the shit thats been cleaned out from the tank and lines.
Edit: Also for guys running lambda widebands or widebands based off of lambda, tune for the effective same you would as gasoline, as technically stoich for E85 is like 12:1 so if you were in a boosted application typically you would be tuning for 11:1 which is equivalent to about 8.6:1....however if your running a lambda based system you would still tune for 11:1 and cruise would still read 14.7:1. The o2 will be fine! This makes tuning a shit ton easier, set up a base 11:1, lean it out, add timing or boost until detonation.
Now down to E85, its energy is that that 30-33% more must be run to get that "bang" from gasonline. Therefore think of your system like this.......650cc injectors are now down to about 450s, your walbro 255? Damn close to a walbro 190 in terms of power output. You run into having to run larger lines than you would otherwise.
However the benfits to this are insane. First of all, E85 has an "effective octane rating" of about 108. It also burns cooler lowering EGT and engine temps which is why I have been looking to find this stuff near the track or near me, much less expensive for an equivalent race gas that will ironically make the engine run cooler AND with less harmful emissions.
Oh PS, E85 cleans shit out real good, so after your first tank of E85 it is highly suggested to change out your fuel filter from all the shit thats been cleaned out from the tank and lines.
Edit: Also for guys running lambda widebands or widebands based off of lambda, tune for the effective same you would as gasoline, as technically stoich for E85 is like 12:1 so if you were in a boosted application typically you would be tuning for 11:1 which is equivalent to about 8.6:1....however if your running a lambda based system you would still tune for 11:1 and cruise would still read 14.7:1. The o2 will be fine! This makes tuning a shit ton easier, set up a base 11:1, lean it out, add timing or boost until detonation.