I recieved a predator tuner U7165 with a used 04 F250 6.0 that I bought. I ran it on the economy power tune and evrything worked well. I just did a total EGR delete kit, a K&N FIPK, and a 4" cat back exhaust. The truck has 35" tires on it and is not used for towing that much. Mostly just driving out ...