I have a 2021 3500 Cummins with a 68RFE.

I deleted and tuned with RaceME Ultra CT box tunes a month and a half ago.

The truck still runs fine, and I can reflash the truck just fine.

However, a couple of days ago, I started having problems with my PIDs reading incorrectly.

For example, the gear will show a value up to 55 at the time (-1 to 6 is the correct range).

Boost also shows values of like 35psi at times when using a quarter throttle and most likely running in the 5psi range.

The truck runs excellent, and I will be getting warp tuning from ray soon after I upgrade the valve body to a billet revmax.

The truck is performing as it has been.

It is just the PID values that are wrong and seem glitchy.

The values glitch back and forth between different values while driving in the same gear.

Also, occasionally if I load a different tune using SOTF, it will just sit there and spin and not load.

I was also able to reflash my truck today with no issue.

I don’t know if I need to update the firmware or what the deal is.

Let me know if anyone has had this issue and has a solution.

I will call RaceME Canada tomorrow to see what they think the PID values issue could be.

I have done the normal unplug the unit from the back as well as from the OBD2, and that does not resolve the issue.

Once again truck runs excellently, and the performance hasn’t changed; just incorrect PID values are showing.

I appreciate any help you can provide.