I'm on e85 as well. I have trapped 126mph with it when it was on 13psi 4.56 gears and 28" tire hitting the rev limiter at the finish line though. We went to a 30" tire and the 10 bolt didn't like the hard Trans brake launches and gave out. I swapped it for a 14 bolt the night before I took it to the track so I didn't get time to do a gear swap on it. So now with 4.10s and 30" tire its crossing at 6100rpms. I will be going back to 4.56 gears as soon as I have some time to work on it again.