Yup, I would check with Seb on a low boost tune for 91 octane to bridge the gaps and plan well on gas stations that have it from LA to Texas. I would call them directly because the locator on the net are not all accurate. They show e85 here at the Terrible Hurst station and they have never had it....I went to the station and the owner said that many stations owner were going to jump in because of government incentives but back out when it didn't happen. So don't trust those sites just because they say so!