TDI PD AUY: Improve Performance with DC Mass Air Flow Sensor

Hello,
'On my Alhambra TDI PD 115 hp AUY model, manufactured in 2001 and with 55,000 km mileage, and which has not been modified, I have noticed a loss of power.'
Here's how acceleration in 3rd gear works:
1000-1500, as before, I think.
Between 1500 and 1850, the performance was more restrained, but you could still feel the powerful engine kicking in – although it felt somewhat less responsive than before the power loss.
1850-2200: Good airflow - then likely a reduction in fuel injection, resulting in only moderate acceleration up to 3500 RPM, and almost no acceleration beyond that.
Maximum speed after approximately 1.5 km - with the engine running at 3500 RPM, the speed was only 145 km/h (previously around 180 km/h).
My current suspicion was a faulty pressure sensor, a disconnected hose, or a broken magnetic switch - but everything seems to be working, so it's probably the mass airflow sensor (MAF).
Unfortunately, I don't have an adapter yet to use VAG-Com - my notebook only has USB .
Since a faulty MAF sensor can only be suspected, I decided to try the relatively inexpensive one from DC (because you apparently need a new one eventually anyway).
Does anyone have any other ideas about what the problem might be?
Which DC LMM can I use for the AUY?
Thank you very much!
Greetings,
Happy-Phantom.

a postscript,
an addition,
a follow-up.
Could it be due to sludge in the intake manifold, possibly caused by the EGR system (which I have now disabled)? The car is only 55,000 km old, but I did use biodiesel for a while (about 10 times).

Happy-Phantom.

Hello,

Take a look at this.

http://www.passatplus.de/download/LMM.htm

I found this list randomly, hopefully it helps.

Please provide the translation result.

Greetings.

Faxes.

The list is great - thank you very much!

I will check the LMM number tomorrow - it's raining right now .

See you later.
Happy-Phantom.

Okay, my mass airflow sensor (MAF) has the part number: F00C 2G2 056. According to the list, there is a compatible MAF sensor from DC for my car.
Once I have tested this, I will provide a review .

Here's another question: If, as described above, the car's top speed is 145 km/h, and it doesn't really accelerate anymore after 3500 RPM, or 3000 RPM in the higher gears, could that be due to a lack of air, for example, caused by clogged intake passages (as I already asked)? Or could that also be a symptom of a faulty mass airflow sensor (MAF)?
Before I remove the exhaust manifold to take a look, I wanted to check first whether the symptoms actually indicate fouling. By the way, it's not producing any black smoke.

Greetings,
Happy-Phantom.

Hello,
Finally, I managed to install a DC mass airflow sensor (part number: A 611 094 00 4.

Experience report on the topic:
'DC's LMM: A problem solver for all walks of life?'

Definitely, the car is running great again, just like Schmidt's cat .

Hello,
Happy-Phantom.