Overview Reviews Product Description Hybrid Blow Off Valve; Type XS; 2015 Subaru WRX (NOT STi). Product Videos Custom Field Product Reviews Write a Review Write a Review × Turbo XS TurboXS Hybrid Blow Off Valve BOV Type XS for 15+ Subaru WRX - W15-XS-HYB Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *