The finger stick if installed properly would not be noticed by a technican who is working on your truck. I have the same truck, put one on myself, and did the blocker plate. The stick is kind of like a dummy solenoid or diode, that maf, and egr are overridden sort of. I can't really explain. Go to Kennedydiesel.com for more info. If the stick, and plate are found, and cause of damage or other problems with your truck, then they will void you warranty. The stick, and plate do not cause any damage anyways. It also depends on the dealership. The dealership by my house will let somethings slide that are aftermarket. I was running an mbrp turbo back system, on my lbz, before I did my straight pipe. Before that I did not have problems with not running a cat. You can ditch the cat without useing a finger stick or blocker plate.