The e85 here in Australia have all been tested with a RON anywhere between 100-110. It's burn rate is around 30% more then 98ron fuel. So your fuel system needs to be upgraded to suit. There have been performance gains on turbo charged vehicles of up to 30% on the same boost! It absorbs moisture from the air so must be kept air tight when in storage. Steel fuel lines would be fine, there have been some myths about the rubber lines eating out, while it works out on paper, I know a few ppl that gave been running rubber lines with no problem. You also need to consider a fuel pump that is compatible with alcohol.

Due to the higher Ron rating, it has a lot higher resistance to detonation. I'll be running my car on e85, Im using -6an Teflon coated braided hose, 2x feeds and 1x return.