hey everyone i was woundering what is the loudest and blow out valve for a toyota supra 93-98? thx

It's blow off valve. The loudest, right here.
http://cgi.ebay.com/ebaymotors/SUNAMI-FAKE-TURBO-SOUND-BLOW-OFF-VALVE-NON-NA-BOV-NOISE_W0QQitemZ8063851980QQcategoryZ33742QQssPageN ameZWDVWQQrdZ1QQcmdZViewItem

Hook that up to a set of PA speakers and you will have all the respect you deserve! :rofl: I hope the sound is not all you care about, the sound is a by-product of the turbo and not the selling point. Most japanese tuners even recirculate the BOV's back into the turbo inlet.

this BOV is nice but look at the price its to much for just a BOV dont you think so?

The Supra uses a MAF system, so you should be plumbing the air back into the intake tract, not venting it to atmosphere.

Real BOVs cost more than that. But yeah, recirc is often a much better choice.

true that, you will run rich for a sec when the BOV opens, causing cool looking backfires, but deffinatly not the best for the valves and exhaust parts.