Quote Originally Posted by YNOT View Post
The previous owner had an adjustable bleed valve to adjust the boost, like one of these; http://www.ebay.com.au/itm/Turbotech...item335e98a59b

Tony
Hey Tony,

I fitted one of those to my GQ and to my disappointment it failed the test on the Dyno, could not get the Boost level set right with it, i think the cheap spring failed to have adequate spring rate in it. I ended up splashing out for a decent one during the dyno run tho sort it out. All good now but i went a good brand Turbo Smart Boost Controller.

my 2c