No boost from forge boost tap

[J6JCC-GTI]

Recently fitted a forge boost tap to my GTI but I'm not getting a boost reading from it just a vacuum! I'm using a mityvac gauge directly from the tap. The car runs lovely with no obvious boost problem.

Hope you guys can help

Cheers

[Markyed30]

Is your diverter valve ok

[J6JCC-GTI]

Well I think it's fine because the car boost like normal when I rev it I just can't get a reading from the tap

[Markyed30]

Are you sure your mityvac guage reads + boost the name says otherwise 

[Pikey Motorsports]

Yeah i thought mityvac where just handheld vacuum testers?

[J6JCC-GTI]

No it definitely reads boost because I have used it for work before and when I first put the tap in a few months ago I checked it and boost was fine.

Cheers