How can I change the sound of the blow-off valve?

The GFB Hybrid valve comes with a pair of blanking plugs. You can use these to configure the valve for full recirculation, a 50/50 split between recirculating and atmospheric venting, or full atmospheric venting for the loudest sound.

Will this valve cause issues with my car's airflow meter?

No, the Hybrid valve's dual outlet design is specifically made to work with sensitive airflow meters. It vents some air through recirculation, which helps prevent common problems like backfiring or stalling that can occur with full atmospheric vents on some vehicles.

What is TMS technology?

TMS (Turbo Management System) technology is designed to improve boost recovery. It helps the turbo spool up faster after a gear change, potentially by up to 30%, meaning you get back on boost more quickly.

GFB HYBRID TMS Dual Port 15+ Subaru WRX / Forester

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Specifications

Brand: Go Fast Bits
Part #: T9207
UPC: 9328022002804

GFB HYBRID TMS Dual Port 15+ Subaru WRX / Forester

Name: GFB HYBRID TMS Dual Port 15+ Subaru WRX / Forester
Brand: Go Fast Bits
Price: 234.81 USD
Availability: InStock

$234.81

In Stock

Fits 2015-2020 Subaru WRX. GFB Hybrid TMS Dual Port blow off valve offers configurable sound and improved boost recovery.

Key Features

Fits 2015-2020 Subaru WRX and 2014-2018 Subaru Forester.
Dual staged venting outlets can be configured for full recirculation, 50/50, or full atmosphere operation using provided plugs.
Features TMS technology for up to 30% faster boost recovery on gear shifts.
Allows use on cars with sensitive airflow meters without causing backfiring or stalling.
Direct fit bolt-on installation.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Subaru Forester 2014-2018
Subaru WRX 2015-2020

Product Details

If you're looking to adjust the sound of your turbo on your 2015-2020 Subaru WRX, the Go Fast Bits Hybrid TMS Dual Port valve is a solid option. This valve combines recirculating and atmospheric venting, which is great for cars with sensitive airflow meters. It helps prevent issues like backfiring or stalling while still letting you hear that signature turbo sound.

What makes this valve unique is its ability to be configured for different sound levels. It comes with plugs so you can set it up for full recirculation, a 50/50 mix, or full atmospheric venting. Plus, the TMS technology is designed to help recover boost up to 30% faster during gear shifts, meaning your turbo spools up quicker when you get back on the throttle. It's a direct fit bolt-on part, making installation straightforward.