I was blending 2 gal E85 to a 93 fill and found my GH AO seems to run better straight 93 octane. With straight 93 my mileage has dropped about 2 mpg even when I behave and went from filling every 5 days to every 4 so the decrease is fairly significant. Shift apply time is much faster without being harsh, but it also seems to shift 1st to 3rd prematurely under normal driving.
In all fairness to Matt, I haven't contacted him about a revision, or made time to learn how to to datalog with the SCT device to send him a file. I've been working (6) 10's for so long, it's everything I can do in life to take care of things that need to get done. Changed the oil and PTU fluid last weekend, should have oil data back from Blackstone fairly soon to check for oil dilution or other changes, 2nd PTU drain at 85k miles (30ish) since last was still minty fresh with just minimal powdered metals stuck to the drain plug magnet.
I had a nice 40 degree low humidity morning last week and gave the little pedal on the right a work out, that's where the tune really shines!