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Potential Tuner
Flex fuel tune....
Is anyone working on a flex fuel tune for the 15-16 Mustang GT like we have seen done on other platforms? I.e. CTS-V using an ethanol sensor?
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Advanced Tuner
These cars use the widebands to infer ethanol content, they don't have an ethanol sensor in the fuel system. The switch is there in the 2011-2014 files I know, but I'm pretty sure Eric still has some stuff to add to make it all work. Hopefully he or somebody else will chime in on his progress.
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Potential Tuner
So the FlexFuel 5.0L F150s dont use an actual flexfuel sensor??
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Advanced Tuner
No, there isn't a flex fuel sensor on the vehicle. The PCM uses the 02's to infer the ethanol content. The technical term for this is "deductive fueling logic" or "virtual flex fuel sensor".
This thread goes into it pretty well. This was the most confusing thing for me to understand at first, I was completely lost.
http://www.hptuners.com/forum/showth...-fuel&p=397647
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any update to activating flex on the S550?