GFB T9020 BOV Respons TMS fits Subaru Impreza WRX/STI MY94- T9020

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  • Adjustable bias venting BOV to suit Subaru WRX, Toyota Supra & Ford Laser TX3
  • Dual-port adjustable air flow allows control over BOV sound and performance
  • Simple adjustment converts BOV from atmosphere venting to recirculating system
  • That classic BOV sound with 30% boost time improvement and improved throttle response
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