Originally Posted by
zratedGTP
I have a friend who brought me his bone stock 2020 F150 5.0L 10 speed for a simple up the speed limiter and turn off auto start/stop. After doing a "write calibration" he noticed that it seems to short shift out of only second gear by 500-700rpm otherwise what was changed worked perfectly. I reset KAM and no difference, then flashed back to stock with no change on the short shifting.
Is there anything else I can try? I read on the older ones you had to "write entire", could that possibly be the issue?
If the write entire does not work what should I be logging to see why this is happening?