That may be true....but I don't think you were running to your local diesel shop to have a chip burnt to add 150+ horsepower, stacking chip upon chip, stuffing 100+hp injectors, searching for highest flow intakes and exhausts, throwing on propane and nitrous and anything that'll make your dump truck faster than brand x's dump truck! Those big ol engines were designed for that work and heavy hauling. Our smaller light truck diesels were designed for what they advertise them to do on tv which is pull our horse trailers and fifth wheels and the heavier loads that gas trucks have a hard time with.....so it's only natural we should keep a lookout when we go adding all the freakin horsepower we do...