Cm871 codes 2961 2764 4214

[Rawze]

Without watching all the data while it is acting up, it is anyones guess.

I have even seen turbo itself do that too. It does a min/max calibration every time the truck is shut off, so if it is hanging up, it can be great one time, and be out of whack the next time you start it up, then last like that all day, until you shut the key off again, then act right once again. if it is the turbo, it will directly effect boost levels and have good power one time, and crappy power the next.