It would be nice to have the ability to flip a switch for e85/93. There is "performance" mode in the trans settings. Seems with the right table tweaks you should be able to put "performance mode" into other areas like fuel and spark. Maybe with the right software. Maybe ATuner will have this ability?

Side note, how difficult is it to add a performance button to a car without one? Would you just put the right pin in the pcm and have a switch that grounds it when flipped on?