Quote:
Originally Posted by beersngars
Actually your tuner will need to do 2 tunes IF you want to run pump gas and E85. First he will need to write a 91 or 93 tune depending on which you have available I'm your area then completely empty the tank and replace it with E85. You'll want to get the best E85 you can and he will establish a tune for it. Then the FF sensor can adjust to any alcohol level in between. In my area, I have 93 available and it measures 10% alcohol and E85 runs between 60% and about 78%.
|
Just to clarify, what I'm saying is that it's just one tune file that's loaded. Sure, you need to tune for E, but you don't need to download a new tune file to the ECM every time you swap from 93 to E85.
I believe that is what Mr. Steck is saying as well. With the flex sensor and 1 good calibration, you're covered.