The SR20 has a re circulating blow off valve, it does'nt blow the exess air into the atmosphere it blows it bask into the intake, I can't remember exactly were the BOV is located, I think right after the turbo on the intercooler piping?<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>
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