You might just have not gutted the cat. You might have to have it along with the dpf one day if it has to go back to a dealership for warranty work. If you don't have all the emissions stuff on the truck they can deny you the warranty.
Should have not hollowed out that cat. Hope you kept that dpf and didnt hack it up also
Stock tunning wont give you any smoke and as stated before I hope you have a program that will turn regen off or that truck is gonna be sick soon and some money will be coming out of your pockets
