Well….. I could easily delete mine, but personally I haven’t seen enough issues with the def system on the 14-18 to bother. I REALLY like being able to start and run my diesel in my garage without the lingering stench. I also have a friend who “lightens” these trucks and he has stacks of emission parts so I’ve been fortunate enough to pick up a few “spare items” especially the costly ones. I do agree though…. It’s a shame that they’ve had to laden everything with this bs. Replacing a NoX sensor is a very expensive guess most of the time. In my experience they don’t simply “fail” but will act up at their own free will.