GReddy's Type S Blow off Valve is one of the nicest designs available. This BOV is made from Billet and Cast Aluminum. The Type S is easy to adjust blow off pressure and maintain. The stock spring holds up to 18lbs of boost. Bolt-in Type S kits listed come with all of the components necessary to replace the OEM Blow Off Valve. Universal Type S Kits can be used on any turbo car with metal intercooler piping. You will need to purchase a mounting flange also with the universal kit.