New Turbo on - still sluggish on hills - fuel?

You know, Airstreamer may be on to something. Take theses kids getting a diesel pickup, first thing they do is new exhaust & big air intake system, cause a diesel will suck up some air, way more than a gas engine, so check the filter & intake tubes to make sure they not getting sucked flat & restricting air flow.

I know an old Ford 7.3 diesel pickup, you let the filter get a little dirty & it will cause the intake tubes to suck flat when you rev the engine up.
Neil