I can't seem to find what the cylinder shaped thing is before the muffler on my 04 lb7. Some say its a cat some say its a dpf. What is it?
Just checked the vin and its an lb7. Does the egr and cat hurt the performance of the truck? I guess what I am trying to ask is it worth it to take off these parts?easiest way is to check the 8th digit of the VIN. if it's 1, then you have an LB7, if it's 2 then you have an LLY
LLY's all have a cat and EGR.