Hi guys I just bought a 2003 gu 3.0 diesel which came with HPD Dawse Valve VNT Boost Controller pre installed. Im wondering if i can just buy a needle valve from tillex and add it to the set up? If so where would I add it to the all ready existing dawse valve set up.

Also what boost pressure should I be setting the contoller to? It goes up to 11 or 12 pounds of boost for a second then drops and stay at 10 pounds under load right now. Should I increase the boost as ive seen people say 13-14 is normal?

Cheers

HPD contoller https://patrolapart.com.au/product/h...61-zd30-models
needle valve https://www.tillix.com.au/product/ne...ol-rate-valve/