For some reason when I turned the truck off today the screen stays on. It's been hours. How do I power it down?
Also yesterday when I got in the truck after driving earlier in the day, the power level was on zero, not 2 as I parked it, and would not let me adjust it. It began working after I parked it and drove it again. And I also lost the PID for coolant temp and corrected mpg. They just went away and when I tap them to select new PID, they aren't even an option now. Boost, egt, and fuel pressure are still fine. What the heck? This thing is like a month old.

 

it sounds like your unit could be faulty.

 

Unplugged it from the OBD port and plugged it back in. All is well now. We shall see.