ok I've heard of these and people talking aboutt hem all the time, and I know this is a gay question and I'll get made fun of quite a bit but what exactly does it do and what is the "sound"?

it opens to let the pressure out of the intercooler pipes. the sound is air coming out.

if you want to know HOW it works, Kevin Jewer had a thing or two to say: http://racingknowledge.org/topic.asp?TOPIC_ID=117

thanks, that actually helped so is it that noise I hear sometimes when people shift it lets out this psssst sound, lol sorry, that's the best way I could type my sound effect, I think you knwo what I mean.

yes

thank god it wasn't another 'which BOV' question! no matter how many times it happens, those threads still get so long...lol

Click here if you want to hear what it sounds like... Theres sounds clips right under the Ebay tag at the top./

Blowoffvalves.com (www.blowoffvalves.com)

hay rattlesnake, thanks for the website, its awesome!