Your correct, I do test it before using it, the local pump E85 fuel use to vary between 70 to 85% depending on the time of year. Less Ethanol in the fall, Winter and spring., 85 % in the months of April to October back 5 years or more ago.
the last 4 times I've bought E85 from them it was dead on 85%, I do see a change in the Ethanol content when it sits in my plastic fuel jugs in the car trailer over 3 months, the gasoline evaporates and the Ethanol content test from E87 to E89 %
I'm hoping the wide bans on the Holley Dominator EFI ECU will make the needed changes in the close loop settings for that fuel
I've heard that the NTK O2 wide band sensors are the best ones to use on any alcohol EFI self tuning systems, what do you think about them?
Onward and upwards with hopefully more HP