I meant to include this link in my above post......I missed doing so.
This Harley is fuel injected and it has been remapped, and the computer can make changes to allow premium to be used when E85 is not available. Unfortunately this same option isn't going to work on the Savage with a carb, and jetting for E85 is going to make gasoline no longer an option (the engine will likely run dangerously lean). This Harley was already converted to be high compression - but they don't say what ratio.
It is a shame he doesn't have a temperature gauge to reflect his opinion that the bike runs cooler......or any proof that the bike makes more power.
http://www.ethanolproducer.com/articles/4874/cruisin-on-e85I am not promoting your use of E85.....but if you feel the need to experiment in the garage instead of just going riding - have at it.