2020 - 2026 Ford 6.7L Powerstroke | Transmission Tuning by PPEI

Trans tuning

It up shifts to early when climbing hills and it doesn’t shift any firmer

2025 Ford TCM review

The shifts are a little firmer compared to stock. The 3-6 gear hold longer if given it some throttle. I did notice driving like miss daisy though that there is a flare of shifts here and there. Overall good, but I also think that not really driving it hard isn’t allowing it to adjust. I do run some beta files as well. Drive ability is better and I think once able to not worry about snow and ice; the tcm will learn and react even better.

Like a glove

10 speeds always was a good shifting transmission but this is on a new level