I'm working on tuning my setup, and had run across an issue I wanted to see if could be disabled.
The F150 pickups are Flex Fuel vehicles. How Ford gets it's Ethanol percentage is not though a flex fuel sensor in the fuel as in the past, it's an inferred value based off of fuel trims. The ECU assumes it knows ethanol percentage based off of fuel trims.
My question, is there any way to disable this in the tune and force the ECU to run straight gasoline tables?