Thanks everyone for the replies. I might have to look at SFT, I mainly saw GDE come up in my brief research. I would be curious to know the difference and if the ECM tracks how many times it's been flashed or, and perhaps more importantly, do dealers care about such things?
Hello everyone, I'm new here and a first time diesel owner. I have a 2015 Laramie Longhorn with 60k that I bought used last year (48k at time of purchase). I love the truck, although its MPG has been a bit of a roller coaster ride. I don't feel like I am getting what I should with this truck but...