If you can build boost, at any point, your turbo isn't bad. I would maybe look at the wastegate, make sure that the actuator isn't letting the exhaust through when it shouldn't be. Pull the vacuum line to it and wire it shut.
Also, have them pull the intake to the turbo and show you that the shaft has play and that the compressor wheel is contacting the housing. Chances are, it's not.
Then have them put a set of dieselsite boots (all 6) on the CAC tubes and intakes.
'02 F-350 "Babe The Big Blue Truck" 4x4, Ext. Cab, 8' bed, SRW
DP-Tuner 80T, 160cc single shots, GTP38R turbo, Ceramic coated IH up-pipes, coolant filter, 6637, DIY exhaust brake, openair CCV, propane, SBC DD all ceramic clutch, ISSPRO EV boost/pyro/HPOP pres./rear end temp, 4" lift, traction bars, 255/70R22.5 tires, York air compressor, 16 flashy lights, 12 strobes, 12 switches on console, 9 switches on the dash, 7 two-way radios, 5 air horns, laptop, siren, 105 gal. in-bed fuel tank, Kennesaw Mountain front bumper
'86 H-D Sportster - 16" apes, custom paint, custom pipes to fishtails, single fire ignition, leather saddle bags on custom brackets, bagger fender, solo seat, home made luggage rack, all LED rear lights
'66 Bronco "Big Little Monster"