Quote Originally Posted by 1994silverado View Post
I run E85 on my 05 avi and love it. It made the engine run smoother and snappier. It smells alot better and I only lost 1-2 mpg in town and its .70 to .75 cents cheaper a gallon.

One thing I wonder is can any of the tuners make a tune that retains the flex fuel capabilities and adds power with gas or e85 without having to change anything.

I would say yes depending on the vehicle.