Cm2250 derate

[Rawze]

Just because you have no DPF cans, does not mean the exhaust (or intake) cannot get restricted. I have found animal remains in exhaust pipes before, .. I have found the DEF doser seeping, and clogging up de-comp tubes before, and all sorts of things that would clog up the exhaust of a vehicle over the years. Even saw a straight piped Pete 389 once that had a bunch of sticks and leaves in the elbow at the bottom of the stack on the drivers side, all burnt to ashes and making a brick in there. How it all got down in there is anyone's guess. - Assumptions are the mother of all overlooked problems when it comes to mechanical things.