I am about to purchase an Evo IX MR, and it is tuned for E85. The guy had it tuned by Wingz Performance out of Chandler, AZ (http://www.wingzperformance.com/). I do have a bit of a drive to get home, and e85 is rare around these parts. He told me that he has an E85 kit on the car, and that Wingz tuned the car for both E85 and 91 pump gas. Is that possible, and if so, how does it work? Can I just drive up to a station and fill it up with whichever, or do I have to do anything special?

 

Yes it's possible. Just a dual map tune. You probably have a way to change between e85 and pump gas maps.

 

Not sure if you have to drain the tank of E85 before you go to pump. Look into this before you head off to do it properly

 

Does anybody know what to do in this situation? Do I have to drain the tank, run the car out of gas, or can I leave a small amount of fuel in the tank?

 

you can just go till light is on and fill up then switch maps

 

but i wouldnt be giving the car a hard time on the first tank when you switch over tho.