Quoting turbowop:
Who cares what the fuel mileage and BTU is? It makes as much power as real race gas for waaaaay cheaper. I don't think anybody with a high power Mitsu is using E85 in hopes to improve their fuel mileage, they're just trying to make more power. For that, it works, and works well.
My thoughts exactly. E85 on turbo cars isn't a new thing, it has been tried, tested and proved. The only real disadvanges are the extra fuel support neccessary to run it, and the fact it isn't available everywhere. Also, cold starts can be harder under some circumstances.