My truck has had a tick since I drove it off the lot. I took it back to the dealer and they told me it was probably the injectors. I changed the injectors when I went supercharged, it still ticks. I checked under the truck and the resonator is covered in black soot around where the can is put together not where the pipes are connected. I will be taking it to the dealer but I have a cut out so I don't know if they will cover. Has anyone else had this problem?