You need to check the health of the motor first before you start adding the fun stuff.
A monitor solution like the ScangaugeII or Edge Insight CS/CTS will be a good choice. The ScangaugeII will monitor everything except EGT and fuel psi, you'll need seperate gauges for that. The Edge Insight CS/CTS with expandable cable will do it all.
After you have a monitor solution, your gonna want to check the health of the motor. This link here will get you started.
Things to consider about owning a 6.0L
After you take care of what ever issues you find, then start addressing those issues and while you have the motor apart, update any OEM parts that Ford has out updated (STC fitting, turbo oil feed line, FPR spring, ect, ect). You can find most of that info on this link.
Write Up: Bullet-Proofing the 6.0L PSD.
After that, your ready for your "man card", and start adding the fun stuff. Proper maintenance is required for the 6.0, be very anal with it!!
2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB