2006 F-250 6.0 Error Code P0470
 

I have been reading a lot of trends but have not found what I need, I'm getting a P0470 error code and no boost, The unison ring is free and clear, the Turbo will not create boost till about 2000 RPM on the road. If I unplug the VGT there is no change in the turbo.
When the vehicle is started there is no tone change in the exhaust. This just started after I replaced a dummy plug in the oil rail. I checked all the connectors as well. :-huh
I cleaned the EBP and tube.
Has anyone experience a bad EBP or VGT. Hoping someone has an answer.

Found the problem
 

I borrowed a Snap on Scanner with allowed me to view the EBP (Exhaust back pressure) the pressure was 52 PSI constant, even when I shut off the engine, When I disconnected the sensor the PSI dropped to 10 psi.
After attempting to clean the sensor I replaced it, I immediately got a reading of 14.7 (ambient pressure).
Started the truck and the turbo kicked it as it should. I hope till will help someone in the future. :-jammin