I have removed the bov from mine because it was leaking and just couldnt afford a new one at the time, then i herd peaple saying it will bugger your turbo because of all reasons given,now im not saying bs but no one seams to have first hand expirence to say it does, so i have left it dose to c if a can stuff it so for the last 12 months its been daily driven and so far the turbo is no worse off then wen i started.