This adaptor plate installs between the boost (MAP)sensor and mounting surface.Thisallowsa tapto run a vacuum operated dump valve or for connection to a boost gauge.When running this tap you are also able to retain your original engine cover.
In the box:

1 x Vaccuum tap
1 x M6x20 Allen Cap Bolt
10 x Short Cable Ties
1 x2000mm of 4mm Vacuum Tube