Zawór blow off BOV Turbosmart TS-0204-1143 Race Port Female Gen V - TS-0204-1143 - Turbosmart Raceport BOV suit Female (Tial) Flange - No Weld on Fitting Supplied. Will fit Tial Q Weld on Flanges. The largest and the highest-flowing BOV in the Turbosmart range has just been redesigned and now features our unique collar design. 46% lighter and 25% smaller than the product it replaces, the new Race Port provides greater performance through faster turbo spool-up from idle and reduced turbo lag between gears. SUPPLIED WITH: Vacuum fittings, V-band assembly, and Blue Spring Rated -18 to -14 In Hg (installed). Large capacity turbocharger systems and high horsepower engines. Ideal for circuit and drag vehicles and trucks.