That all makes sense, thanks for the detailed response. I'm coming to the realization that meth is going to be a necessary part of my plans due to the charge temp issue, there's really no way around that even if the E85 is holding down in-cylinder temps. So at the very least, the cooling that meth will provide should make the car happier when it gets hot and humid out. There's no reason I should be surprised by this, I was just experimenting with how much E85 could compensate for those issues on meth-less cars. I pulled that log this afternoon, anyone in the area knows it was a muggy day. Even as a DD this car doesn't see WOT more than 2-3 times a week, so i'm not too concerned about aggressive peak boost since it won't be seeing it that often. OK off to ATR thanks again