I just bought a 2000 F250 7.3 with 65000 miles on it, NICE truck!!!! I had a 2002 F250 7.3 with over 280K on it, loved the truck. The 2002 had an Edge Evolution that performed very nicely for me. We have a slide in pop up camper on the truck and regularly pull a 20 ft car trailer with a car inside. The people that installed the Edge for me now have a "6 position tuner chip" that delivers up to 150HP. It doesn't have the EGT gauge and supposedly increases the pressure from the injector rather than increasing the amount of fuel like the Edge did. Does anyone have any experience with this 6 position chip ( I think it is made by US Diesel) and what kind of results for mileage are you getting. I regularly got 17 with the Edge pulling the trailer with the camper on the pickup.