Hi I'm new to this site and need help, I have a late build 2004 F250 6.0 I bought from my aunt in 2018. been having some issues. my mods are S&B cold air intake, KC stage 1 turbo 10blade wheel, sinister diesel boots and charge pipes, 4ich exhaust with cat no muffler. has a superchip programmer 1855 flash pack that's really old don't know when the last update was for the truck or the superchip. parts that where replace D-gas bottle, ICP sensor with new pigtail, EBP sensor with new pigtail, IPR looks new. new engine wire harness. new alt. new battery x2. has had some injectors replace. sinister blue spring kit. new motorcraft fuel filters. update dummy plugs. new radiator with coolant flushed prior to replacement. new map sensor with hose. new intake manifold temp sensor. coolant temp sensor new. I run DELO 15w40 recently tried arch oil ar9100 one time and the truck seems to clatter less when idle also almost seems like it has a very light miss intermittently at idle sometimes, it runs really smooth not rough I have further then put it back to stalk mode cleared kam memory and all DTC but still have a code for p0603 it wont go away no matter how many miles I drive it to try and reset monitors. I have AE and have monitored some things but I don't know half of what I'm looking at or what values or psi or percent and volts every thing should be normally with a stock tune besides the extra air from the stage 1 turbo. truck starts great cold or hot every time no long cranks either. truck seems to have lag when going 65 normally 70 mph cruising and then mash the go pedal it will be sluggish for a few second like 5 to 7 and then slowly pick up speed and I assume is should be instant with the VGT turbo. my hpop will not hit 4000 psi its at like 3900 icp and ipr 77% WOT, at idle I get icp of 582 and ipr is at 23.99 % at idle. fuel pressure is good at 55psi under load is like 50-48psi, my ficm is good logic pwr main pwr and vehicle pwr, mass air flow checks out good also. sorry im all over the place tonight fella my brain is fried and im so tired but I just want to get my lemmon back up and running haha I have hope for 6.0s just gotta take care of them. also my coolant temp and engine oil temp run within 1 to 6F of each other doesn't over heat. I have no gauges on my truck with I will get when I can save up some bills im broke, but for now all I have is AE with enhanced softwear to monitor.