There was a member called Razorlab that set up a Zeitronix flex fuel gauge with a GM style flex fuel sensor and I think I saw someone figure out a map that adjusts fueling and boost target based upon ethanol percentage.
I am not sure how it works but I am pretty sure we need to find a spare sensor input on our ECU because the Accessport is just a flashing tool and data logger, it doesn't do any fuel injection calculations itself, the ECU does all of that.
If I can figure this out I want to go flex fuel so I can mix my own blend at home because there are only a couple e85 stations around here, I don't want to go out of my way to fill up or have to nail the ethanol percentage every time.
If I can get it to work, I can drive around without the Accessport plugged in because I won't have to change maps if my ethanol percentage changes.