I'm working my way up to E85 and I'm watching my LTFT compensate. I'm at E40ish at the moment and LTFT are adding 16-23% across the board. Logically this all makes sense to me due to ethanol requiring more fluid volume. What I do next is where I need help.
Adjusting fuel volume:
What is the "best" way to deliver 20-30% more fuel and get my LTFT closer to zero? I don't have a flex fuel option (that I'm aware of), so I plan to reflash when my ethanol content changes above a certain threshold. I've read that I should adjust lambda and leave stoich alone. I've also read that I should adjust shoich and leave lambda alone. I've also read various other ways to do this that all sound like bandaids. Here's a screenshot for refence
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Watching injector Duty Cycle
Now that I'm working the fuel system so hard, I want to watch my duty cycle. I found pulse width, but I haven't found a way to read injector duty cycle. Do I need to calculate duty cycle from pulse width and rpm or is there a built in way to monitor injector duty cycle?
2.0 2017 Fusion AWD