2003 ford f250 6.0 diesel ruuns/drives for parts/fix

215,215 miles has a 6.0 diesel with low boost. I replaced both fuel filters and now just barely meets specks for fuel pressure if the battery is fully charged. Boost is low and all I can get it to do is about 3 lbs at low speed on my 40 acres. I also cleaned the EGR valve and that helped a bit, It seems to be all stock and not been apart. Micheline tires left front has a real slow leak. Suspect that the turbo may need cleaning and perhaps an EGR delete would be in order, drives around good and went down the highway straight during the short time that I drove Ir. it is also quite that an oil change with the right oil might help it. I bought it to haul my slide-in pop-up camper, but lost interest when we figured out that my daughter reacted to the diesel even though I cannot smell it. trade might be possible john cell -- 970-640-4804 text is also ok