My truck does the same thing. If I floor it from a stop at WOT it will not shift from 1-2...I have to let off and it will go. I have not messed with any settings at all. I thought something was wrong with my truck but I guess it must be the something in the tune as everyone else is having the same ...

...No one has any advice for me?

I just recently bought a u7137 for my dodge truck. Was very happy to get the unit and now im getting pissed because I cant get the unit to connect to my computer. I followed the instructions but it still said device not functioning due to no drivers.

Ive tried many drivers online to see if a ...