Alright, let’s talk about the Mach 2 diverter valve. If you’re into turbo cars, you probably know how crucial it is to have a solid bypass valve. This little piece of engineering is a game changer for your ride, especially if you’re rocking a Subaru or a Toyota Supra from the '90s. Seriously, this isn't just marketing fluff—it's the real deal.
First off, installation is a breeze. When we say it’s bolt-on, we mean it. No need to hunt down extra adapters or modify your setup. Just pop off the factory bypass valve and swap it with the Mach 2. It’s as straightforward as it gets—no headaches, just pure performance.
The Mach 2 is designed as a 100% recirculating valve, which means if you want to keep things quiet while still boosting your performance, this is your go-to. But if you’re craving that sweet whoosh sound when you shift, you can grab an add-on kit to vent to the atmosphere. It’s like having the best of both worlds—silent efficiency or loud and proud, depending on your mood.
Now, let’s get into the nitty-gritty. Factory valves often have two big issues: they don’t open until a certain pressure is hit, which can leave you hanging, and they’re not great for throttle response. Plus, good luck venting without stalling your engine. The Mach 2 fixes all that. It can handle all the boost you throw at it—like, no turbo could ever push enough pressure to break it. And with TMS technology, your throttle response is going to be on point. Oh, and when you switch to atmosphere venting? No stalling. Just smooth sailing.
Fitment:
In case you're rocking a Mazda Miata from 2004-2005 or a Subaru Outback from '95 to '96, this valve fits those too. The T9120 GFB Mach 2 TMS Recirculating Diverter Valve has a 20mm inlet and outlet, making it a solid choice for those specific models. So, if you're looking to upgrade your setup, the Mach 2 is worth considering. Trust me, your turbo will thank you.
Other Part Numbers:
Go Fast Bits #gfbT9120
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2004-2005 Mazda Miata |
Miata | 2004-2005 |
|
1994-1996 Subaru Impreza |
Impreza | 1994-1996 |
|
1995-1996 Subaru Outback |
Outback | 1995-1996 |
|
1993-1998 Toyota Supra |
Supra | 1993-1998 |

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.