Whats your 7.3 doing or not doing? I know a little about them from working on the one I drive everyday. I have had a couple 7.3s over the past 15 years or so and worked on them as needed. I bought the AutoEnginuity software with the Ford Bundle to trouble shoot them. Currently chasing down some shorted wiring on a 1997 7.3L for a friend of mine to get his truck running. I know enough to be dangerous, but have the capability to pull the codes and monitor several things for troubleshooting. If you need to hook it up to a computer let me know, I'm in the Birmingham area.