Ok so I've had my 03 6.0 since May of 2014, (love it). While I've owned the truck, I've done the FPR spring upgrade (early December) and replaced both filters with Motorcraft OEM as of yesterday! My glowshift FP gauge reads 55-60 PSI at idle and 45 PSI at heavy acceleration; (I don't even wanna go into a WOT). My question is, what else could I do to help boost up this FP? I read that the HFCM(?) could be to blame. Is that the fuel pump thing where the primary fuel filter goes on the driver side? On YouTube, PowerstrokeHelp.com has given me some useful information regarding the 6.0 and it's mentioned that a healthy fuel pump could be the solution to my issue. I'm pretty handy and like to get things done without spending $$$ for something I could do with the right tools. Any ideas? Sorry if I mention any incorrect terms, I'm going to school for this stuff later in the year.