The symptoms are weak power, cant go over 80KPH no matter the gear, the forums says there must be a pipe disconnected somewhere that is leaking vacuum. Unfortunately I don't have a vacuum pump so I have to go old school and suck on every pipe to see which one can hold vacuum. But I don't want to do all that, I just tested the pipe that comes from the N75 to the turbo and I sucked on it and I could see the actuator move. It will obviously move more with a bigger vacuum capacity that what my lungs can provide. What I want to do now is cut and Plug most of the pipes besides the ones that come from the vacuum pump to the N75 and from the reservoir because I am sure these ones are in good order, the ones that take vacuum to N18 and EGR and ASV I think are not important, I provided a diagram to show in Blue which points I want to plug off and the red line is the line to the the turbo actuator.
vacuum diagram
vacuum diagram