If you're looking for an aftermakret blow-off valve, then have a look at this PERRIN Recirculating Blow Off Vlave. The facotry blow off valve overtime can become weak, and leak boost. After testing, it has been found that the factory blow-off valve leaks boost after about 3 PSI. The PERRIN unit solves this issue with a good proper seal. This blow off valve is also adjustable for quicker turbo response between shifts, increase in power, and overall better driving abilities. This blow off valve can relieve any amoutn of boost for factory or aftermarket turbochargers.
This blow-off valve is a direct ft with pre-set adjustment.¬†