Hi Ms_RS6, thanks for the info. Did you install the 044 in-line outside the tank (there seems to be another similar looking pump that goes on the inside of the tank - the direction from 034motorsport sent by Ben 916 shows the pump installation inside a fuel tank)? If we are talking about the fuel pump that is installed outside the fuel tank, two more questions: (1) does the 044 fit in the old slot for the OE pump? (2) did you end up changing the OE piping?
Incidentally, I found the pressure requirements in the VAG Manual. The pump needs to deliver 0.8 to 1.3 bar to the fuel rail for OE set up.