I know your bov runs off vacum but how do you set the bov? My bov was orig. set to run w/ 7 psi. and now I am running 20. It also has been jacked with so the settings are all off, now I don't know what it is set at. Can you expain how to set these damn things. At 7psi. it use to pop off real loud, now I don't hear that, but rather the turbos just spooling down when I let off the gas, no pop or woosh! Also every time I shift the car pops real bad.