haveing no bov all that will do is slow down comp wheel /more lag on gear change bov is to help turbo spool keeps comp wheel spining when off gas so when you get back on the gas its all go due to wheel speed it hasent lost not like that with no bov ? why becase slow down comp wheel to much and then has to try spin it up wich means lag no benifit and stess to turbo blades and berings will stuff it in end but you play you pay