I'm not running their tune specifically but these cars won't support full e85 without meth or port injection. I am currently on full e85. The car is a animal down low but we are loosing power up top where fueling can't keep up. We also are running less boost because we are running out of fuel.
I am installing a meth kit and EOS Port Injection kit in my car as we type this. I'll be making a build thread soon.