I don't know much about the evo set up have not looked into it in detail. one question does come to mind. are most people turning the boost up considerably with the e-85 and if so could this be a fault in the evap system in some of the cars? ie. could blow by from high boost be finding it's way into the evap system, into the tank then through the injectors? just a thought without much veh. specific knowledge!! I personally have been tuning e-85 and running it in my sti for more than a year no probs. what so ever. the only real difference between the evo would be about 10 psi of boost!!