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Shipping’s on Us for Select Products
December Sales: Up to 20% Off Selected Brands
Listing New Feature: OE Reference Numbers
New Brands Now Available – VEMO, VAICO & ACKOJA!
New Arrivals from Powerflex!
New Powerflex Transfer Case Bush Insert!
New Forge Arrival
New Arrival: Precision Raceworks Auxiliary Fuel Systems
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December Sales is here — and it’s bigger than ever. Get 20% OFF with code DEC20 on your next order and stay tuned as we reveal new products every week leading up to the main event. From performance upgrades to styling and maintenance essentials, this is your chance to score the best deals of the year.
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OE Reference Numbers – Easier, Accurate Part Matching!
Quickly find the right parts for your car with OE reference numbers.
Now available on all listings!
Now available on our website! Meanwhile don’t miss out – click below to explore our ongoing 2025 Sale and grab unbeatable deals.
We’ve just added three new products to our lineup:
Upgrade your ride with these high-performance rear lower toe link inner bushes, designed for improved handling and durability. Available now!
Upgrade your drive with our latest Powerflex Transfer Case Bush Inserts, designed specifically for the E9x, X1 E84, and X3 E83 models. These easy-to-fit inserts fill the void in the OE rubber bush, reducing movement, enhancing stability, and prolonging the life of your bush.
Choose the perfect fit for your setup:
Perfect for maintaining performance and reliability, these inserts are a must-have for any enthusiast. Shop now and experience the difference!
New Arrival Alert!
Unleash the full potential of your BMW B58 engine with the Forge BMW B58 Carbon Induction Kit!
Highlights:
Optimize performance, reliability, and style in one sleek package. Get yours now!
Take your X3M, Supra, and M2 to the next level with Precision Raceworks’ Auxiliary Fuel Systems (AFS). Designed for stability and performance, these systems deliver unmatched fuel control for your port injection setup.
Why Choose Precision Raceworks AFS?
Key Features
Available Now:
Upgrade today for unmatched fuel performance!
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Go Fast Bits
In Stock
Available to Order
Available on Stock Order
Price Match Guarantee
If you find a lower price at an eligible UK retailer website, we will match it.
Fitting service at Xatrix, West Yorkshire
We can offer a fitting service for this part. Contact us for a fitting quote.
The T9481 VTA is a performance blow-off valve solution for VW & Audi vehicles
If you want sound with your performance (or performance with your sound!), GFB's T9481 VTA delivers!
By combining atmosphere venting with the proven performance benefits of our ground-breaking DV+, the VTA delivers an aggressive blow-off sound, improved throttle response, as well as superior boost holding and reliability.
With its low-profile integrated solenoid and compact design, installing the T9481 is a breeze. Just swap out your factory diverter valve with the VTA, and you're good to go!
Key features and benefits:
T9481 is a direct bolt-on for most Audi, VW, Seat and Skoda vehicles that have a Pierburg branded diverter valve.
Why choose a VTA over a "BOV spacer"?
Whilst "BOV spacers" might offer a cheap way to get a blow-off sound, they fail to tackle the fundamental performance and reliability issues associated with the OEM diverter valve - all they do is redirect the vented air.
The VTA offers more than just sound. By replacing the OEM diverter valve you also get enhanced performance and reliability.
Reliable Boost Holding
Despite some improvements in reliability by the latest generation of OEM diverter valves, the performance trade-offs remain. There is no escaping the fact that the moulded plastic valve mechanism of the OEM valve cannot reliably seal boost pressure.
The VTA's CNC-machined aluminium and brass valve components, combined with a Viton face seal ensure reliable boost holding even up to 50psi.
Sharper Throttle Response, Faster Boost Recovery
OEM electronic diverter valves are binary in operation - they're either open or shut. Your throttle, however, isn't. When you make small throttle adjustments, the binary operation of the factory diverter results in abrupt changes in power delivery, which is the very definition of poor throttle response.
GFB's patented "pilot actuation" system allows the VTA's piston to open and close progressively, thereby smoothing the power delivery during throttle modulation, and ultimately improving throttle response.
Unrivalled longevity, backed by our Lifetime Warranty
The combination of precision manufacturing, attention to detail, and robust materials means the VTA will last a lifetime. So does the warranty!
| Weight | 0.4 kg |
|---|---|
| Dimensions | 16 x 8 x 9.1 cm |
Feel free to contact us at info@mlperformanceusa.com should you wish to double check!
To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your license plate or the last 7 digits of your VIN. Simply enter your car details prior to checkout.
Go-Fast-Bits-T9481
Manufactured by
Go Fast Bits

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