I've had the JLT on the truck since day one and have been to my dealer 4 times with no warranty issues related to the CC since owning the truck. Of course, I didn't take my truck in for any EVAP issues since there were none. Remember folks, you can mod your vehicle, and if there is an issue related to that mod, they can deny your warranty. Cat-Back exhausts, CAI, Catch Cans, piggy back tuners (which I would surely remove) all fall into this category. Stallantis knows that we'll be throwing bolt-ons to these trucks. Just be prepared to prove your mod isn't the problem when warranty questions it which is rare for bolt-on stuff. Just bolt your aftermarket products on correctly with good parts! Don't shortcut!