cant get more boost

[aderiley]

ok guys/girls could do with some help. i have fitted a gfb reactor dual boost low boost set to 11psi but no mater how much i adjust the gfb i cant get high boost over 12.5psi i have no sudden cut out or detonation any ideas also what coolant should i use in the intercooler. spec = uk 95 ej20 vf8 turbo 38mm vent to atmo bov (new but cheap from ebay) rising rate fuel regulator, greddy cone filter water charged intercooler running 97 ron fuel, i have an fcd but havent fitted it yet as i understand fuel cut comes in at 17psi i dont know how much it would have boosted before i fitted the dual boost cant here signs of wastegate flutter. a thought i had was that i was using the factory bov before but still got the whoosh, could it be that there is another bov fitted somewhere else (ie near intercooler) have had a quick look but cant see one where could it be if there is one and surely it would allow me over 12.5psi. help!

[vrg3]

Maybe your cheap-from-eBay blowoff valve is leaking boost?

[aderiley]

i was wondering that as well cant hear any leakage but may have to try and borrow another to try

[vrg3]

You could try just capping the blowoff valve off and going for one very careful run where you gingerly operate the throttle without rapid movements.

[Psychoreo]

^good idea. And love the new Icon vrg3!!
Just be VERY careful with the throttle. I'm assuming you have a boost gague, as you can see how much you're boosting. Maybe the boost gague is reading wrong aswell?

[vrg3]

I didn't pick it; nor do I particularly like it.

[aderiley]

good plan bov came with packing washers have added a few but no difference so maybe load up a few more or cap it and keep my eye on the boost guage