hey there guys, i've got a few problems with my ST185 GT4 i've just finished installing my bov took it for a little drive, and has no noise blocked off the vaccum hose no flutter. car has a POD and i can hear the turbo spooling, but no noise after backdown, someone direct me in the right direction? i've just bought the car for 2 days and i got no idea whats wrong with it ken