also.. the BOV is not to remove air before the Throttle body. It is to remove Back pressure that is created because the throttle is closed, and the turbo is still spinning (inertia) and pushing air. The BOV is not actually necessary either. It is a safety device designed to prolong the life of the turbo. and it makes a really cool whirring sound. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt='
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In order to make the bov re-circulate you have to connect tubing to the blow-off valve exhaust opening the would connect to the intake b/w the MAF, and the Turbo, where there is no pressurized air.