External waste gate question

[Boooooost]

I've got a GReddy waste gate fitted and am using a profec B boost contoller. In the instructions it says I need to fit the pipe from NC to a pressure source and gives the turbo compressor housing as an example, I do not have any where to connct a pipe to here and just wondered if someone could tell me where else I could get adequate pressure from?

Cheers matt

 

[nismoboy]

inlet manifold.