The WRX08-RFL or "Really F#$%!@ Loud" valve is designed specifically for those who want the loudest vent to atmosphere blow off valve available. At ~115 db at 15 psi, the RFL is the loudest valve on the market. Not only does it look and sound much better than the stock plastic valve with it's polished/anodized aluminum finish, the WRX08-RFL adds function and can hold whatever boost pressure you want to run.
*Pictures used for marketing purposes only, actual product may vary