Hi. I have had the EGR blocked for a while and thought I should get to the butterfly removal. After a fair bit of searching around the net I have come across the suggestion to block the vacuum hose by blocking it or bending it and securing with cable ties. Is this essential? I am not overly mechanical but if this is what I think it is then if I block that wont it stop my turbo meter from reading as it seems to feed off of that via a tee piece? Maybe someone could point me towards the right hose on the 2.8? Thanks guys.