Some good info in this thread about E85. I haven't tried, it's not readily available near me so I stick with the good stuff (93)...

https://www.ford-trucks.com/forums/1...2011-6-2l.html

In my eyes, the top 2 changes with my tuner were the trans shifts and the throttle response. The added hp is nice but the shifts and response make it worthwhile.

Keep us posted how it works out though, not alot of info out there that I've seen with E85 and the 6.2.