The sensor you are refering to is a MAF (air mass) and the right one doesn't see any air flow until the 2nd turbo comes in at 2400rpm. 2012 TDV8 Vogue (L322)

Thanks to all the guys that contributed to this thread, I just cleaned the MAP sensor as per the advice here. As a side note - on the screenshots it does not get clear how big is this little , and it is quite small - less than a centimeter. Cleaned it with break cleaner.
I cannot tell if that gives any difference as I have issues with DPF and that was my first step in the troubleshooting process.
On the photos, cleaned, dirty, and the little black hole to the intake that appears to be quite dirty as well. That is probably my next step

Click image to enlarge

Click image to enlarge

Click image to enlarge