The DT is a Navistar engine. For the DT466, head to an International dealership. Have them check to see that they have the HP settings all the way up. They will pop a computer on it and see. Usually when those trucks roll off the line they turn all that stuff up. But receiving buyers turn them back down to meet insurance company requirements. There really isnt any programmers for the DT466 or HT530 other than the MD Fleet software. Edge makes a programmer for the CAT 3126 and thats it for a big bore. Bully Dog makes some stuff for Deere diesels too. But thats all I can think of.

 

Thank you, it was a Penske rental truck, so they may have had it turned down for that. I am also going to have the top speed limiter cut up to 75 instead of 66.