Ok guys so the first thing I did to this truck when I baught it a few months ago was put a 5" mbrp exhaust on it. I had it installed cause I dont have a shop or the tools to do it myself. So my question is how do I know if its a DPF delete or not? I get horrible gas milage probably do to my big tires but Ive heard the DPF helps alot I also have a Quad S2. Can anyone give me an idea at what im looking at or how to get better gas milage my wallet would appreciate it :thumb: