I've got a '96 red top celect plus with 800,000 miles. It says 460 hp on the tag, but boost pegs at 34 lbs. I get the same boost out of an '83 NTC 400 that I changed the fuel pump and increased injector travel, which is supposed to be 500 hp. I have no idea whether someone screwed with the ECM before I purchased the truck but I am not complaining.
A forum community dedicated to Diesel engine owners and enthusiasts. Come join the discussion about performance, builds, ecodiesel, towing capacity, modifications, classifieds, troubleshooting, maintenance, and more!