Boost Control

On the surface, it may look like just another dual-port blow-off valve, but the Respons is actually much more than that. Featuring GFB’s patented v...

Easy to Install and Setup, Turbosmart Supersonic BOV. Preferred venting solution for serious street tuners and racers. Big flow and even bigger sound.

Quiet and completely street-legal! A full recirculating BOV, ideal for WRX enthusiasts who don’t want to be noticed. Easy to install and set up.

Quiet and completely street-legal! A full recirculating BOV, ideal for WRX enthusiasts who don’t want to be noticed. Easy to install and set up. IN...

Easy to Install and Setup, Turbosmart Supersonic BOV. Preferred venting solution for serious street tuners and racers. Big flow and even bigger sou...

Our latest Type 5 Dual Port BOV made specifically for the 2015 WRX features the innovative new Smart Port drive-by-wire friendly staging technology...

Easy to Install and Setup, Turbosmart Supersonic BOV. Preferred venting solution for serious street tuners and racers. Big flow and even bigger sou...

Easy to Install and Setup, Turbosmart Supersonic BOV. Preferred venting solution for serious street tuners and racers. Big flow and even bigger sou...

Easy to install and setup, the Turbosmart Dual Port BOV features sequential ports for quiet operation on mild boost and full performance at full bo...

Our latest Kompact Smart Port made specifically for the 2015 WRX features the innovative new Smart Port drive-by-wire friendly staging technology t...

Dual outlet-type BOV designed specifically for the Subaru 98-00 Forester and MY99 WRX. The Kompact Dual Port vents both to the atmosphere and back ...

Easy to install and setup, the Turbosmart Dual Port BOV features sequential ports for quiet operation on mild boost and full performance at full bo...

Dual outlet-type BOV. Dual Port vents both to the atmosphere and back into the air intake. Ports with sequential timing allow quieter operation dur...

Full recirculating BOV. The Plumb Back system recirculates all excess pressure back into the intake system. Great for enthusiasts not wanting to be...

The Kompact Dual Port blow-off valve is a direct replacement for the stock bypass valve on the Subaru WRX MY08-14 as well as the new Nissan Juke/Pu...

Full recirculating BOV. The Plumb Back system recirculates all excess pressure back into the intake system. Great for enthusiasts not wanting to be...

Full recirculating BOV. The Plumb Back system recirculates all excess pressure back into the intake system. Great for enthusiasts not wanting to be...