Getting ready to install a regulated return. I am looking to find a good base line start point for the fuel pressure. I have a 2003 7.3L with 3.5" discharge pipe, 3.5" walker big truck muffler, and stock tail pipe for exhaust, AIS, DP-Tuner 60 tow 80 econ and 120, hpx crossover line, and 6.0L I/C and trans cooler. I would go right to Jody but they are closed this week. It would be good info for others too. I haven't found anything on this on any of the big diesel forums. Thank you for any help.