"Should be an adjustment for those shift points on that Ford Truck automatic."
I found diesel programmers that are set up for efficiency. Most just dump more fuel into the truck at low revs, and advance the injection. The engines make more black smoke after these mods. One (Edge Performance) also claims to let you alter the shift points (at WOT) and hydraulic oil (clutch) pressure without touching the engine programming.
I'm going back to GM trucks as soon as I can.
When I talked to Miro at Synlube he said a lot of the diesels are built in Mexico rather poorly and they blow up or fail and make a lot of noise when running from poor machining tolerances. Full throttle is injecting too much fuel - I see it here all the time and there is no need for it - back off a little - acetone is supposed to reduce the soot and black smoke - 2 oz per 10 gallons.