I have a 2010 Escalada that is a flex fuel vehicle. I normally run E85. Will I still be able to run E85 after installing the Diablo tune with my i2 intune, or will I have to switch to 93 octane. Also, if I cannot run E85 after tuning, can I leave the base tune on the vehicle, and change only the speed limiter and tire size and run the E85? Thanks for your help.