I need some advice. I have a 2000 F250 with the 7.3L Powerstroke. Things are ok, but it seems underpowered; I took the advice of a co-worker and bought a Superchips Flashpaq, it still seemed underpowered. Needless to say, I have put a lot of money into my truck, which I really like. My mileage was terrible due to all 4 brake calipers being bad, that took awhile to figure out. I have installed an AFE air filter system and I can hear the difference in the air into the intake system. So, here is my question, what can I do to improve the performance of my engine? Knowing that I need to install either the analog gauge kit, or the digital one, what tuner or chip should I look to so that I can better my perfomance and fuel mileage?