Well I took a few runs in 1st and 2nd. Data logged and did a little tuning. The latest gas tune I had was not very complete because I never dialed it in so it was a little rich to begin with. A couple percent here and there and got a pretty solid 11-12 afr. Lost about 10hpa on full throttle but I have to say that it feels about as strong as the e85 tune normally does. I had very low timing so I think that there is power in there. I definitely feel the torque is down in the lower power band which is actually nice. It is much smoother to drive. It also does not seem to fall off at all at the end. I pulled up to 7,000 rpm solid in 2nd. I will have to run on the dyno with gas and e85 to see.
As far as sound goes. It is so much better as a daily driver. Not anywhere near as bad of a droning sound. The rasp is definitely stronger on the top end though. Really sounds like an M3 winding up.