The OFT hardware is pretty reliable, unless you physically damage it. But in that worst case scenario, you would not really want to run straight 93 on the E85 tune. First you'll be running ignition timing advanced more than 93 could handle, and also you'd be running ~30% rich which would make for some rough running. While the likelyhood of that happening is pretty slim, if you really wanted to be safe I suppose you could keep a tactrix cable on standby and know how to use it haha. That or don't go on a road trip tuned for E85, the fuel economy would suck with little benefit for highway cruising
