I took my 2016 1500 in for the Fiat-Chrysler recall to get the Ecodiesel emissions programming update (which comes with an extended warranty, per the federal settlement). At first, the dealer's service shop pretended they didn't know about the recall (!), but relented when I showed them the letter sent to me, and learned when I took it in that there's been a bunch of others before me that they serviced for same recall. There must be some hidden dealer issue behind that attitude.
The service was performed on 21 June 2019, and I noticed immediately after that emissions firmware update that the acceleration is MUCH poorer than before...almost to the point of being dangerous when pulling out in traffic. I'm planning to take it back to complain and see if they introduced some other problem while it was in their shop. I filled my fuel tank on the same day, and have not yet refilled so I don't know how mpg fuel efficiency has been affected; I use an Android app "Fuel Log" to keep track (it's fantastic, BTW), and have averaged 22mpg mixed driving for the past couple years. Once I know what's happened to that fuel efficiency, I'll be taking it back.
There is a monetary compensation component to the federal settlement, about $3K USD, but I haven't heard more info on that yet. I'm otherwise happy with the truck, it has low mileage (37K), so likely to hang onto it and take the cash.