Turbosmart Dual Port Blow Off Valve Black for 2002-2007 WRX / 2004+ STI / 2006-2008 Forester XT

Stage blow-off valve that can be customized for a variety of different configurations In the standard dual port configuration, the ports are staged so that the bypass valve comes on first, and the atmospheric trumpet comes on second You can convert the dual-port to the supersonic configuration to achieve a full atmospheric function and using a provided blanking plug Billet aluminum construction Can be used as a purely recirculating function by converting the valve into a plumb-back function by using the provided blank to plug the trumpet Can be converted to Mega-Sonic by placing trumpets on both openings Comes with -22 to -10 InHg yellow spring pre-installed Also comes with gasket, replacement oil breather hose as well as fittings making this blow-off valve ready for the installation