On my 6.0 I installed a industrial injection hybrid vgt turbo after stocker blew apart. Now only make 20 psi of boost no matter what I do. Was making 40 with stock one before it went. I have no boost leaks anywhere and 35psi fuel psi. Took it to ford dealership and they say turbo is weak but it only has maybe 1000 miles on it. Anybody have any ideas?