Well, I'm new to the forum as well as to diesels. I recently bought up a 2000 f350 dually with a centurion conversion. Its a nice truck and there are a few things I'm thinking of doing, probably starting with a leveling kit and then a juice computer mod to increase the fuel mileage. I'm getting about 16 around town and 14 on the highway, should i expect it to get much better than that?