2017 mustang gt flex fuel....need some help

[GeeT]

My friend/tuners is trying to FF tune my car and we cant seem to figure out why its not reading the alcohol %. He says hes turned in on but it still doesnt work. My AFR Is a little off at the moment and we are still working on that. Would that have anything to do with it?

[Stangguy]

It's best to dial in vehicle before enabling FF. There is also other things to adjust for flex fuel to function properly. Best bet is the post the tune file so we can give recommendations.

[GeeT]

Would you be able to give a list of the things that needs to be changed? I will try and post a log today

[Jn2]

if you logged the car before enabling flex fuel logic then you need to repoll the vehicle for the flex fuel % PID to come up when you log.