Yep, it happened. The "It" is the F-37 Recall
First, we have done several mods to the Libby to improve things. Transgo shift kit, Afe air filter, airbox mod, etc.
The thing had been running awesome! The Transgo shift kit made a night and day difference.
What happened was that the Libby had an inter cooler hose clamp come loose and a hose popped off. Now, we didn't know that's what happened, or I would have fixed it myself. But, I was not home, wifey had it towed to our local dealer.
Disclaimer: This dealer is excellent and they have always taken care of us and the Libby has always been fixed the first time when we have taken it in. Plus, they overlook the obvious mods...
So, the Libby is in, I call and ask them for an update, blown turbo, split intercooler hose etc??. They tell me about the hose clamp and then say it will be ready tomorrow, they are doing the transmission recall....Transmission recall? Schit!!!
Sure enough, F-37 and the associated derate of the engine via ECM Reflash.
Impressions, the shift points seem little changed. This may be due to the Transgo hardware. The engine has minimally noticeable less torque. Other than that, it seems that a "rattle" or "snarl" that was noticed in the transmission has been suppressed and replaced by a "whine" or whirring" noise that is minimally intrusive at slow speeds.
For the future, I am going to reflash the ECU with the InMotion product and I am going to install a Suncoast Torque Converter...
So, if you haven't had F-37 done yet, it may happen the next time your CRD is in for service..
As an aside, I think it is criminal for Chrysler to derate an engine in fear of the transmission not being reliable. They should just bullet proof the transmission and not

with the engine!!!
Cheers!