Select the year of your Subaru Forester:
GFB Respons TMS: Smarter Than Your Average Dual Port BOV!
Are you struggling to find an atmosphere venting BOV that works for your car? Look no further than the GFB Respons – you might just be pleasantly surprised!
Not Just Another Dual-Port BOV
At first glance, the Respons might seem like just another dual-port blow-off valve. But trust us, it’s so much more! With GFB's innovative patented venting bias adjustment system, you can take charge of how much air vents from each outlet. Let’s break down why this is a game-changer:
- Customize Your Sound: Want it quiet? Recirculate all the air for a factory-silent operation. Craving that loud, attention-grabbing blow-off sound? Vent it all to the atmosphere. You can even find the perfect balance anywhere in between!
- Say Goodbye to Common Issues: Enjoy the iconic blow-off sound without worrying about stalling, backfiring, or any of those pesky BOV-related problems, even if your car has a sensitive airflow meter (MAF).
But Wait, There’s More!
The Respons isn't just about making noise; it brings a whole host of benefits to the table:
- Improved throttle response
- Faster boost recovery when shifting gears
- Unlimited boost-holding capabilities!
For instance, using GFB's Turbo Management System (TMS) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when you shift gears. How cool is that?
How Does the Venting Bias Adjustment Work?
It’s simple! By twisting the adjusting ring, you can open the atmo port while simultaneously closing the recirc port. This gives you a range of venting ratios from 100% recirc to 100% atmosphere, and everything in between. Talk about versatility!
Easy Installation
When we say "bolt-on," we mean it! Everything you need comes included, and it fits directly into the factory location—no separate adapter required and no modifications to your car!
Performance and Sound Without Compromise
- Control the volume of your blow-off sound
- Enjoy up to 30% faster boost recovery when shifting
- Get that blow-off sound without the hassle, even on sensitive MAF-based systems
- Hold unlimited boost pressure
- Universal and direct bolt-on kits available
Fitment:
- Subaru WRX | STI 99-00
Other Part Numbers:
Go Fast Bits #gfbT9000
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2004-2005 Subaru Forester |
Forester | 2004-2005 |
|
1999-2000 Subaru Impreza |
Impreza | 1999-2000 |
|
1998-2002 Subaru Legacy |
Legacy | 1998-2002 |

It all started with the passion of John Adrian to create something that other aftermarket parts cannot produce. Most parts he encountered are either of low quality and are made out of inferior materials.
He decided to take matters into his own hands and started designing, testing, and developing parts that would help improve the performance of his vehicle. Using his own car as a personal testbed, he created products that other enthusiasts later noticed, which has become the start of Go Fast Bits.
Your Source of Performance PartsThe company offers various performance parts such as boost controllers, blow-off valves, short shifters, pulley kits, and more. John Adrian also acts as the chief engineer of the company. Using his 35 years of experience manufacturing high-quality parts for the automotive industry that includes Original Equipment Manufacturers (OEM) parts, he was able to produce parts that meet the demands of his customers.
Quality Made ProductsAll their parts are meticulously made using the highest grade material available to ensure product durability and reliability. Each piece is manufactured to fit perfectly on the vehicle and tested to ensure optimum performance and nothing less.
Purchase Go Fast Bits Parts At Vivid RacingIf you are in the market for high-quality products that would help improve your vehicle's performance, then Go Fast Bits is a brand that you can trust. Their products are proven to deliver performance without compromising the daily drivability of your vehicle. Whether your car is used as a grocery getter or a weekend racer, Go Fast Bits has the right parts for you.
To know more about the company, visit Vivid Racing and check out their parts list that fits your specific requirement.
We live in a throw-away society, conditioned by cheap products and frequently released new models to expect eventual failure and discard something when it stops working or is superseded. However, pride in workmanship and our commitment to quality means that when we put our name to something, we are also staking our reputation on it.
That’s why we back our products with the best Warranty in the business! You should expect a lifetime of use from a well-engineered product, so if your GFB product fails as a result of defective materials or faulty workmanship whilst you remain the original owner, we will repair or replace it.
If the fault occurred as a result of usage outside of the terms of the warranty, or you are not the original owner, fear not, we can still help you. You should never need to throw a GFB product away, as spare parts are available and won’t cost the earth.
To activate your warranty go to:
https://gfb.com.au/warranty/
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