Mitsubishi turbo for Detroit diesel 6v92ti Ddec

A slow turbo is usually from a bad carrier bearing or fouled turbine blades.
I have witness poor, wet and dirty air filters cause issues also.
I have never had great results in just cleaning the blades, others have.

Call your DDC rep and ask for the part number and quote for just the chunk.
Turbos come apart like a sandwich. You just need the center assembly That includes the the important parts. You don't have to unbolt the cast iron from the exhaust manifold.
Saves time and money.

I have no idea what your issues really are.
Your asking about the turbo. Rebuilt / exchange is my usual path when it has been conformed to be a turbo issue.
If you are running, any way to get a pressure gauge on the turbo outlet AND air box pressures? While under load?

You could have by-pass blower issues and think it is a turbo issue.
There are other items can keep the air box pressures down.
Pressure gauges help reduce a guessing game.
Frak, could just be a poor preforming injector.

Yes, the blades are shaped with a curve on the tips. These designs have lots of science behind them per engine application. Changes from engine tune to tune.

Sadly, the better DDC techs are dropping like flies lately. Do you have access to any real DDC techs? Probably an old guy with 9 (or less) fingers, grey hair and half of a silver beard and one eye brow.
You want him... ☺

Back at my desk and I see Sanford, FL.
Oh,,, On Lake Monroe, There is not a diesel tech worth my spit.
Your going to need to call one in from the east coast.

Get back to me if you can't find one. I'm down river from you.

You can't see the turbine blades without removing the turbocharger or the exhaust elbow. What you see when you remove the airsep is the (cold)compressor side and normally it there is an issue it will be on the (hot) turbine side. Corrosion of the cast iron housing is a common problem. The Clearance between the turbine blade and housing is critical to producing maximum horsepower.

Just woke up with this question;
What color is your exhaust smoke when you feel your not getting needed boost?