So battle with this truck is cold no issues. Runs fine at 65 with peddle and cruise accelerate and deceleration. Not the issue come in at operating temp. No matter what gear. Truck will turn 2500rpm and run strong but when I decelerate and take foot all the way out of the peddle derates the pump to 750ish and doesn't alow input from peddle till rims fall below 1500. No codes. Corrected loose connection at icp ipr and cam. No fuel pressure or heui pressure issues noted with hooked up and driving. Once hot the truck will hold 1800 all day. Once I go over it it takes thottle away till it resets to 1500. Any thoughts out there?