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

Yes, the GFB Respons valve features a patented Venting Bias Adjustment. You can infinitely adjust how much air is recirculated or vented to the atmosphere by simply twisting the adjustment ring, allowing you to go from a silent mode to a loud, atmospheric vent.

Will this valve cause stalling or backfiring issues?

The Respons valve is designed to help prevent issues like backfiring and stalling that can occur with fixed-atmosphere blow-off valves. By adjusting the venting bias, you can achieve the desired sound without compromising your vehicle's drivability.

What is included in the kit?

The kit includes the GFB TMS Respons Blow Off Valve and necessary components for installation. Please refer to the manufacturer's instructions for a complete list of included parts.

GFB 08-10+ WRX / 05-09 LGT TMS Respons Blow Off Valve Kit

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Specifications

Brand: Go Fast Bits
Part #: T9001
UPC: 9328022001562

GFB 08-10+ WRX / 05-09 LGT TMS Respons Blow Off Valve Kit

Name: GFB 08-10+ WRX / 05-09 LGT TMS Respons Blow Off Valve Kit
Brand: Go Fast Bits
Price: 320.85 USD
Availability: InStock

$320.85

In Stock

Fits 2008-2014 Subaru Impreza. GFB TMS Respons Blow Off Valve Kit lets you adjust the sound from silent to loud, while maintaining performance.

Key Features

Fits 2008-2014 Subaru Impreza.
Patented Venting Bias Adjustment allows infinite control between full recirculation and full atmosphere venting.
Adjust the venting bias simply by twisting the adjustment ring to change the sound from silent to loud.
GFB's TMS Technology ensures rapid boost recovery and optimum throttle response.
Built to withstand boost pressures of 100psi, holding more boost than any turbo could produce.
Direct fit for 2008-2014 Subaru Impreza, 2008-2013 Subaru Forester, and 2003-2009 Subaru Legacy.

⚠️ 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 2008-2013
Subaru Impreza 2008-2014
Subaru Legacy 2003-2009

Product Details

If you're looking to fine-tune the sound and performance of your turbocharged Subaru Impreza, the Go Fast Bits TMS Respons Blow Off Valve Kit is a solid option. This kit is designed to replace your factory blow-off valve, giving you control over how much air is vented to the atmosphere versus recirculated back into the intake system. This means you can dial in the classic blow-off valve sound without causing issues like backfiring or stalling that can sometimes happen with fixed-atmosphere valves.

What makes the Respons valve stand out is its patented Venting Bias Adjustment. You can easily twist the adjustment ring to go from a completely silent, recirculating mode to a full atmosphere vent that makes a loud, distinct sound. Beyond just the sound, GFB's TMS Technology is built in to ensure quick boost recovery after shifting gears and to maintain good throttle response. This valve is built to handle boost pressures up to 100psi, which is more than any turbo on these cars can produce, so you know it's well-built for the job.

This kit is a direct fit for your 2008-2014 Subaru Impreza, as well as certain other Subaru models. Just remember that it's not CARB approved, so it can't be shipped to California.