Ethanol questions - converting non-flex fuel to ethanol

[the_red_shark]

A flex fuel OS without the sensor works by looking at the trims over some period of time, I'm not sure of the details.

Without the intank sensor your ecu has no idea the mix of fuel that is actually going into your engine. All it knows is stoich mixture is 1 lamda. So when tuning you see lamda 1 or 14.76 on your wideband gauge, its actually showing you the stoich mixture of whatever fuel you are using.

So by my understanding you really don't tune it any differently than you tune gas. Cruise at 1 (14.7), and WOT say 11.7 (very rough example to show a point), so your thinking doesn't need to change. Which leads me to the point that any ethanol tables are irrelevant to any vehicle without a flex fuel sensor.