Hi, I'm new to the arcane world of Diesel GU ZD3.0 and I have been told that I need a Dawes valve.

I have been looking closely at my Boost and EGT gauges on a recent trip and I noticed the Boost gauge was climbing up to 15lb and then suddenly dropping when no apparent acceleration was happening .

I have heard a Dawes valve will prevent over-run of the Turbo, so - where can I get one, and get one fitted in WA?

I have paid about $4K on some upgrades (3" exhaust and the gauges + Catch can and Filter) and I'm not very happy with the standard of installation.

I really need someone who will not give me the runaround and give me real story and also assist with the installation