If you increase the valve pressure (turn in the screw), you increase the valve's resistance to opening at lower vacuum levels, meaning part throttle or at idle but you also increase the occurrence of compressor surge, which is what a BOV is there to prevent in the first place.
I have a sneaky feeling that my tezza is not performing at 210hp as it should. Now i want to bring it to a performance shop and have someone to retune it back as close as 210hp and have it dyno. Do you guys know any...