Best way to stabilize cold starts with E85 on 3.5 ecoboost??
2020 f-150 upgraded pump and port injectors for full e85 capability w/ flex enabled. Now that it?s getting colder down here in Savannah, my truck is starting fine but the first 10-15 seconds are stumbling and almost stalling out. I tried changing the percentages on PI/DI without success. From my reading, I?m finding that the most common reason is the need for addition fuel while cold/warm fuel tables are used. I did find some fueling tables under my open loop/warm start maps. Most the temperatures are still calling for around one lambda. What should I adjust them to to try to stabilize my situation? There are two separate tables but I still have to find out if the flex fuel enabled it into the equations or not. I was told that the cold start emission reduction could also play a part with it, but it can only change the percentage of port versus direct injections. Has anyone else got any advice or know of a way I could try to stabilize starting?