I visually checked the turbo for signs of wear or blockage, all OK.
the vibrations seems to be caused by the wastegate solenoid valve which suddenly increases and decreases the duty cycle.
The problem is very accentuated with the 5th gear with the other gear seems to go well.
I apologize in advance for my english ( i'm italian) i thank those who can give me an idea im am at crisis, what that behavior of the wastegate solenoid could depend on.
Your screen images show your math channel is on CH A. But, your channel labels show Duty Cycle on B. The gold trace(math channel) seems useless as a result of selecting A instead of B to formulate the math channel. Also select a different color for the math channel to avoid confusion.
Care to send us the .psdata file?
Reading through your initial post the word "crisis" made me smile as I know only too well that feeling of loneliness and gloom when you hit a brick wall with diagnosis
One thing we cannot have is a technician in crisis and your English is fine
Looking at your captures remined me of this case study viewtopic.php?p=100270#p100270
These studies maybe totally unrelated but in my scenario manifold pressure was great than exhaust back pressure and when the EGR valve opened (low load, light throttle cruising) this would result in intake manifold pressure venting into the exhaust system creating a surge/jerky drive (sudden drop in MAF)
Blocking the EGR during diagnosis confirmed the fault and cleared the symptom and so this may be an avenue to explore (obviously this would have to be un-blocked and the fault rectified)
With the Alhambra case study we arrived at turbocharger boost level remained too high at light load but were not given authorization to replace
I therefore don't have a conclusive diagnosis but I hope this serves as food for thought?
ch A map sensor, ch b wastegate sensor, ch c egr valve position sensor
I have seen seamingly inappropriate shifts in the turbo solenoid and egr valve commands when the Dpf is about to go over temperature or there is a disparancy accross two sensors. This can be caused by residual HC,s built up of the front face of the oxidation cat or even cracking in the Dpf substrate which avoids logging p2002 .
It might just be worth a look