[XanderWiFi]

Our cars are too old for this kind of stuff. Even just the 10% isn't good but good luck finding pure gasoline anywhere these days. Have the same issue with my motorcycle which is a 2005 and specifically says not to have ethanol in the gas. They make an additive called star tron. I used it my last fill up and could have sworn to feel a difference in the engine performance.

For a tune you're probably looking at 75+ dollars an hour depending where you live. Here in DC its like 150 bucks an hour. I would recommend eating the gas costs or buying a newer vehicle that can do the flexfuel. Too much trouble for too old of a car.