Tuning E85 for the strip is easy if you have an AFR gauge. Set your AFR gauge to read the lambda scale. Tune to read 15 to 20 rich or 80 to 85 lambda as you cross the strip. Mine is tuned at 83 lambda. The great thing about E85 is temp and humidity has little effect on your tune. I check mine every pass and it's always with in one or two numbers either side of 83. I haven't changed jets since the initial tune over six years go and the car always runs the number. I'm running a 496 stroker with a quick fuel 850 E85 carb. Jetting is 93 square. I shift at 5800 and cross the strip at 6000. The car runs consistant 6.5s in the 1/8th mile.