I just bought new Tyrant tunes from Mike at no limit. Only put about 30 miles on the truck since i installed new tunes but so far but seems like the issue is resolved. I will give update once I get a few hundred miles.
I have called PPEI about my trans shifting. The trans has been acting weird since I originally tuned it, but got significantly worse after I installed the 4.1 update. I first tried the chat on the ez lynk app and never got a response this has been weeks, still no response. So I called they...
Unfortunately this seems to be my experience too. I am trying to get them to help with the trans shifting weird. I'm thinking I will be switching soon.