Finally got all my gauges installed. What is the acceptable range for the Pyro? It is an ISSPRO? I will be towing this weekend and just wanted to get an idea of what to expect.

i guess it was a dpf. it wasnt a cat i know that.

Up until 2008 or so they came with a factory resonator,Cat and muffler, DPF's came about around 08 on the 6.7 Cummins.

i guess it was a dpf. it wasnt a cat i know that.

The DPF's were never installed on 5.9's, or 2ng gens. If your truck was a Cali model it would have had a cat, otherwise??? DPF's also require software to remove on a 6.7. MY 07.5 was the first Dodge to use a DPF. As Wild and Free said some models also had resonators, I am not sure about 2nd gens but 3rd gens only had resonators on Mega Cabs.

My 02 long box quad cab had a factory resonator and muffler, no cat.

My 02 had the resonator also. Definitely not a cat. It kind of looks like one though.