NGR's News NGR Type-S BOV Back in STOCK! Posted on December 20, 2021December 21, 2021 by NGR Performance 20 Dec We are also back live with the NGR Type-S Blow off Valve! Just in time for Christmas! Happy holidays to all, glad to have the NGR Type-S Back in STOCK! NGR Performance Turbo Filters are back in STOCK! 5in Turbo Filters Released!