Has anyone experimented with enabling the built-in "flex fuel" capability for EcoBoost? On my actual FFV N/A 3.5L V6, it uses inferred stoich to determine the setpoint for stoich. There's even a PID within VCM Scanner for inferred stoich AFR. However on EcoBoost, this PID is missing. I believe the mechanics are the same as my N/A engine has a wideband o2 system same as EcoBoost. I've experimented with setting stoich for the E85 content I was using versus just keeping it at 14.08 and filling up with E85 to see the LTFT compensate accordingly.
I'm just wondering if anyone has played around with enabling the flex fuel logic on EcoBoost and whether it was worth it.