P59 12562918 OS Issues

[Fast355]

I did some tracing of x4 vs x24 switch, Lots of IF code jumps, than might set even much more subswitches. Full tracing will take lot more. I am almost sure that if you switch to x24 sensor whell it will work as it should. Low res only can be very tricky to use.

I figured it might possibly be that kind of scenario. Honestly I just adjusted the stoich, threw some extra timing in it above 0.52 gm/cyl and it runs well for now. I got 243 miles to 17.2 gallons of E85 mostly cruising around town. Torque is up, power is up, the engine runs noticeably smoother and seems happy even without the flex fuel sensor being utilized. This is what my fuel trims and wide band looked like at hot idle this evening. E85 is ~2.40-2.70 gallon and pump premium is over a $1.00 more a gallon. With my E85 availability, ~250 mile round trips and 31 gallon tank I will just keep pumping E85 into it and adjust stoich as needed for now.

https://youtu.be/2zP2xdXIQmw