Ok I already started this thread but couldnt find it any way my 89 turbo supra is stock with just a blitz bov and i can hear the turbo spool and then i shift at about 5000 rpms and the tires chiperd but i didnt hear the bov at all?Also the factory boost gauge doesnt work so i couldnt tell if it built boost i felt it but didnt hear the bov? What could be the problm?