2015 Duramax No power and heavy smoke from the tailpipe! Unable to accelerate! NO BOOST!!

In this video we have a 2015 Chevrolet Silverado with the duramax engine that was sent to our shop by another shop that doesn't work on diesels. This engine would barely accelerate and had heavy smoke. Also no check engine light.
Parts used: 84094727 AcDelco tube
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