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.
Hey guys just wondering whats your opinion on these cars. I know each has their own uniqueness, but just wondering if anyone owns either of these before and willing to share their experiences such as daily...