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.
There're alot of different rims which serves different purposes for the cars that we drive. some go for show(chromes which is useless in my opinion), some purely for performance(magnesium rims which are crazily...