Ford Powerstroke Diesel Forum banner
better mpg
1-1 of 1 Results
  1. 6.4L Performance Parts Discussion
    I want to do a DEF delete but leave the stock CAT and muffler on the truck. I know I will have to tune as well. I plan to stay at stock HP with a stock intake. My goal is to lose the DPF but keep the quiet exhaust and still pass emissions for Nashville TN. (they plug into OBD long as you...
1-1 of 1 Results