Head on over to the Maxxforce Engine forum here and post up codes and what history you have. You’ll likely get a bit different response than they’re junk. Bottom line is you need to get some education on how these things work, what the typical problems are, and what the typical solutions are. Otherwise, you’re at the mercy of the dealer or shop. Only thing I really know/have heard about them is they like to be run hard. That’ll keep the soot out of your turbo.
2007 HR Scepter 40 PDQ
400 ISL, ~67K on the clock....for now