Golf tdi 130 pd Tdi ASZ engine.

I have really bad mpg on boost. I can get 40-50mpg downhill or coasting along but as I go above 2000rpm the mpg goes to late 20's and averages about 30mpg.
I have fully serviced the car including fuel filter, air filter, temperature sensor and I replaced the vacum hoses with new silicone ones.
It's quite loud on boost but performance is ok and no black smoke
I can't see anything obvious from the specified and actual on the Map or boost side?
I have disconnected the MAF and get the same mpg as if is plugged in but obviously the car is slow, using virtually no boost when MAF disconnected.
Getting no VAGCOMM errors.


Can anyone spot anything in the reading: Thanks!