Can I adjust the sound of the blow-off valve?

Yes, the GFB Respons Blow Off Valve features a patented Venting Bias Adjustment. You can infinitely adjust the valve's sound from completely silent, where all air is recirculated, to a loud atmospheric vent, or any setting in between, by simply twisting the adjustment ring.

What vehicles does this blow-off valve fit?

This kit is verified to fit Subaru Impreza models from 2001-2014, Subaru Forester models from 2004-2008, and Subaru WRX STI models from 2015-2020.

What is TMS Technology?

TMS Technology, used in GFB valves like the Respons, is designed to ensure rapid boost recovery after gear shifts and maintain optimum throttle response. It helps your turbocharged engine perform efficiently.

GFB 02-07 WRX / 04-10 STI TMS Respons Blow Off Valve Kit

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Specifications

Brand: Go Fast Bits
Part #: T9003
UPC: 9328022000909

GFB 02-07 WRX / 04-10 STI TMS Respons Blow Off Valve Kit

Name: GFB 02-07 WRX / 04-10 STI TMS Respons Blow Off Valve Kit
Brand: Go Fast Bits
Price: 320.85 USD
Availability: InStock

$320.85

In Stock

Fits 2001-2014 Subaru Impreza. GFB TMS Respons Blow Off Valve Kit lets you adjust the sound from silent to loud.

Key Features

Fits 2001-2014 Subaru Impreza, 2004-2008 Subaru Forester, and 2015-2020 Subaru WRX STI.
Patented Venting Bias Adjustment allows infinite control between full recirculation and full atmosphere venting.
Adjust the blow-off sound from silent to loud simply by twisting the adjustment ring.
GFB's TMS Technology ensures rapid boost recovery and optimum throttle response.
Built to withstand boost pressures of 100psi, holding more boost than most turbos can produce.
Helps prevent backfiring and stalling common with fixed-ratio atmosphere-venting BOVs.

⚠️ 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 2004-2008
Subaru Impreza 2001-2014
Subaru WRX STI 2015-2020

Product Details

Go Fast Bits is known for making well-built performance parts for turbocharged cars. If you're working on your 2001-2014 Subaru Impreza WRX or STI, their TMS Respons Blow Off Valve Kit is a solid option for managing boost pressure. This valve helps prevent backfiring and stalling that can happen with other types of blow-off valves by letting you adjust how much air is vented back into the intake versus out to the atmosphere.

What's really neat about the Respons valve is its patented venting bias adjustment. You can literally twist a ring to change the sound from completely silent, where all the air recirculates, to a loud atmospheric vent, or anywhere in between. This means you can get that satisfying blow-off sound without causing drivability issues. GFB's TMS Technology is also built-in, which helps with quick boost recovery after shifting gears and keeps your throttle response sharp. Plus, it's built to handle boost pressures up to 100psi, which is more than most turbos can produce.

This kit is designed to fit your Subaru Impreza from 2001 to 2014, including WRX and STI models. Just remember, it's not CARB approved, so it can't be shipped to California.