2011 Dodge Ram 1500 5.7

Vehicle has been tuned for a couple of years and no issues. Recently got a CEL and plugged the tuner in to diagnose. The tuner powers on, well lights up, but never goes into it's OS. It's just a lit blank screen. I connected it to my PC after launching the update agent (to ...

- This is the first time this has happened, probably way short of 200 miles on the truck since upgrades.

Nothing in the tune would cause this, especially if you didn't have this issue prior to the mechanical work. Sounds like something mechanical related.

- I feel like the tire size is not set ...

I have recently gotten my truck back after having the cam/lifters replaced and was told it needed a tune to disable MDS. Everything is great except:

- Hard starts after warmup
- at 60mph in OD it has a stumble feeling when a slight load is applied (like going up a hill). If I manually put it in 5th ...