Got this installed on my silvia. To make it easy for the buyer, i will just sell the pipe its attached to, so all u need to do (if u have stock piping) is loosen the clamps, remove the old pipe, put this in place and connect the vac line, EASY.
All works 100%, comes as new. This is the model thats adjustable. So can go off at the boost pressure u desire.
If ur wondering what its sounds like, its a pretty loud ptssssh noise. and yes its loud.
With pipe, asking $300.
Steve.