Fits 2015-2026 Ford Mustang and 2020-present Ford Bronco models equipped with 2.0L, 2.3L, 2.7L, or 3.0L engines. This Go Fast Bits (GFB) Whistling Trumpet is a Vent-to-Atmosphere (VTA) accessory designed to modify the acoustic profile of your compatible GFB blow-off valve.

Engineered for drivers seeking a distinct, high-pitched whistling sound during pressure relief, this trumpet replaces the standard outlet on GFB VTA valves. It features a precision-machined design to ensure a secure fit and consistent performance under boost.

• Delivers a signature high-pitched whistle blow-off sound
• Direct-fit accessory for compatible GFB VTA valve bodies
• Precision-machined construction for durability
• Simple thread-on installation
• Manufacturer Part Number: T9404

Fits select 2014-2021 Volkswagen GTI (Mk7/Mk7.5) and 2014-2020 Audi S3 (8V).

The GFB VTA (Vent to Atmosphere) provides the signature blow-off sound for your turbocharged Audi or Volkswagen without the drivability issues common with generic atmospheric valves. Utilizing GFB's TMS (Turbo Management Solution) technology, this valve is designed to improve throttle response and boost recovery while replacing the failure-prone factory plastic diverter valve diaphragm.

Engineered to work with the factory ECU control, the VTA ensures the piston only opens when necessary, preventing the stalling or rich-running conditions often associated with simple blow-off spacers. The unit features a CNC-machined billet aluminum body and a precision-fit brass piston for superior pressure handling and long-term durability under high-boost conditions.

• Manufacturer Part Number: T9401
• Signature blow-off sound with factory-level drivability
• Billet aluminum construction with brass piston for high-pressure reliability
• Replaces weak factory plastic diverter components
• Direct bolt-on installation to factory mounting points
• TMS technology for improved throttle response and boost retention

Fits select 2012-2024 Mercedes-Benz C-Class, E-Class, CLA, GLA, GLC, S-Class, SLK, and G-Class models (2.0T).

The GFB DV+ (T9388) is a high-performance, drop-in replacement for the factory diverter valve in late-model Mercedes vehicles. While the original solenoid is retained for seamless ECU integration, the DV+ replaces the fragile plastic internal components with precision-machined brass and billet aluminum. This design ensures a superior seal, even under increased boost levels, and eliminates common failure points found in the OEM unit.

• Improved boost holding and sharper throttle response
• Faster boost recovery during gearshifts or brief throttle lifts
• Pilot-actuated valve mechanism for more reliable operation
• Replaces failure-prone plastic OE components with brass and aluminum
• Complete drop-in installation into factory mounting points
• Manufacturer Part Number: T9388
• Back by a Lifetime Warranty

Fits select 2014-2024 Ford Bronco, Explorer, Fiesta ST, Maverick, Mustang, and Ranger (2.3L / 3.0L).

The GFB DV+ T9384 is a high-performance diverter valve solution designed to replace the weak factory electronic solenoids often found in Ford EcoBoost applications. Engineered with a low-profile integrated solenoid, this unit serves as a complete replacement for both Continental and Pierburg diverter valves, ensuring a hassle-free installation without clearance or fitment issues.

By replacing the OE plastic valve components with precision-machined internals, the DV+ improves boost holding and prevents the common pressure leaks found in stock units. This results in sharper throttle response and significantly faster boost recovery after gearshifts or brief throttle lifts, making it an essential upgrade for both stock and tuned vehicles.

• Replaces factory Continental and Pierburg diverter valves
• Low-profile design for easy installation in tight engine bays
• Improved boost holding and throttle response
• Faster boost recovery between gearshifts
• High-strength construction for unrivaled longevity
• Backed by a Lifetime Warranty
• Manufacturer Part Number: T9384

Fits 2022-2023 Subaru WRX Base, GT, Limited, and Premium models equipped with the FA24 engine.

The FA24 engine in the VB-chassis WRX utilizes an electronically controlled factory diverter valve rather than the pneumatic bypass valves found on previous generations. While electronic control allows the ECU to trigger the valve faster, the original equipment (OE) unit relies on a molded plastic valve mechanism that is prone to boost leaks and long-term reliability issues. Furthermore, the factory valve only operates in binary open/shut positions, which can compromise throttle response during spirited driving.

The GFB DV+ (T9383) addresses these shortcomings by replacing the weak plastic components with a CNC-machined metal valve and an integrated low-profile solenoid. This design allows for progressive valve operation—opening and closing only as much as needed—to maintain boost pressure more effectively and sharpen throttle response. The low-profile housing ensures a clean fit in the tight engine bay of the 2022+ WRX.

• Replaces factory plastic valve components with durable CNC-machined metal
• Integrated low-profile solenoid for precise ECU-controlled actuation
• Solves boost leaking and reliability issues common with OE electronic valves
• Provides progressive valve operation for improved throttle response and drivability
• Bolts directly to factory mounting points for a straightforward installation
• Manufacturer Part Number: T9383

Fits select 2007-2015 Mini Cooper, Cooper S, and John Cooper Works models (1.6L Turbo).

The GFB DV+ T9382 provides a complete performance upgrade for the factory electronic diverter valve. Unlike the T9352, which requires reusing the original solenoid, the T9382 features its own low-profile integrated solenoid. This makes it a superior choice for high-mileage vehicles with worn factory components and for Mini N18 engines where clearance is limited. By replacing the entire OEM assembly with a pressure-balanced brass piston and high-strength housing, this valve eliminates boost leaks and ensures maximum durability.

• Integrated low-profile solenoid replaces the factory unit entirely
• Faster boost recovery and sharper throttle response during gearshifts
• Improved boost holding capability compared to OEM plastic diaphragms
• Low-profile design allows for easier installation in tight engine bays
• Built with premium materials for unrivaled longevity
• Manufacturer Part Number: T9382
• Backed by a GFB Lifetime Warranty

Fits select 2005-2020 Audi, Volkswagen, and Porsche models including A3, A4, A5, S3, GTI, Jetta, and Macan (2.0T).

The GFB DV+ T9381 provides a complete performance solution for factory-fitted electronic diverter valves. Unlike the T9351 which requires reusing the factory solenoid, the T9381 features its own low-profile integrated solenoid. This design allows for a total replacement of the OE valve, making it the ideal choice for vehicles with tight engine bay clearances, such as EA888 Gen 3 engines found in MQB platform vehicles with aftermarket intakes or IS38 turbo upgrades.

By replacing the prone-to-failure plastic factory components with a precision-machined brass piston and billet housing, the T9381 solves boost leaking issues and improves reliability under high-load conditions. The valve is engineered to remain shut until boost is requested to be vented, resulting in sharper throttle response and significantly faster boost recovery during gear shifts or brief throttle lifts.

• Replaces factory Pierburg diverter valves entirely with an integrated solenoid
• Low-profile height solves clearance issues on MQB and EA888 Gen 3 applications
• Improves boost holding and throttle response
• Faster boost recovery between gearshifts
• CNC machined billet aluminum and brass construction
• Direct bolt-on fitment to factory mounting points
• Manufacturer Part Number: T9381

Fits select 2021-2024 Volkswagen Arteon, Golf GTI, and Golf R models. The GFB (Go Fast Bits) DV+ T9380 is engineered as a direct-fit replacement for the newer generation of Continental brand OEM diverter valves found in late-model EA888-equipped VW vehicles.

Standard factory diverter valves often utilize plastic components that can leak or fail under high boost. The DV+ T9380 solves this by retaining the factory solenoid for seamless ECU integration while replacing the internal valve mechanism with a precision-machined brass piston and heavy-duty spring. This "pilot-actuated" design ensures the valve stays closed under boost, providing sharper throttle response and faster boost recovery after gearshifts or brief throttle lifts.

• Manufacturer Part Number: T9380
• Improves boost holding and throttle response
• Replaces weak factory Continental diverter valve internals
• CNC-machined aluminum body with brass piston for unrivaled longevity
• Maintains factory ECU control for OEM-like integration
• Backed by a Manufacturer Lifetime Warranty

Fits all 2022-2023 Subaru WRX models including Base, GT, Limited, and Premium trims.

The FA24 engine in the 2022-2023 WRX utilizes an electronically controlled factory diverter valve rather than the traditional pneumatic bypass valve. While this allows the ECU to trigger the valve quickly, the factory unit relies on molded plastic internals that are prone to boost leaks and long-term wear. Additionally, the OE valve operates as a simple binary switch—it is either fully open or fully closed—which can compromise throttle response during spirited driving.

The GFB DV+ (Part # T9369) addresses these weaknesses by replacing the factory plastic valve mechanism with precision CNC-machined metal components. This upgrade retains the factory solenoid for seamless ECU integration while changing the operation to a performance-oriented progressive method. This ensures the valve can open and close in proportion to the boost pressure and throttle position, providing superior boost holding, increased durability, and significantly sharper throttle response.

• Replaces weak factory plastic internals with CNC-machined metal components
• Retains factory electronic control for perfect ECU integration
• Progressive valve operation for improved drivability and throttle response
• 10% faster opening and 50% faster closing than the factory unit
• Ensures ultimate boost sealing and long-term reliability under high-load conditions
• Manufacturer Part Number: T9369

Fits select 2010-2022 Alfa Romeo Giulia and Stelvio, BMW X5 M and X6 M, and Jeep Wrangler. Please note that BMW S63 engine applications (X5 M and X6 M) require two valves for a complete installation.

The GFB DV+ (T9366) is a performance upgrade designed to solve the boost-leaking issues common with factory plastic diverter valves. By retaining the factory solenoid and ECU control, this unit ensures seamless integration and simple installation while replacing the internal components that fail under high pressure. The DV+ uses a precision-fit brass piston and CNC-machined housing to maintain boost pressure and improve throttle response throughout the RPM range.

• Enhanced Performance: Opens 10% faster and closes 50% faster than the factory diverter for sharper throttle response.
• Reliable Boost Control: Eliminates boost leaks by replacing weak plastic internals with a CNC-machined brass piston.
• OEM Integration: Retains the factory solenoid for full ECU control, ensuring reliable operation without triggering trouble codes.
• Durable Build: Constructed from high-grade billet aluminum and brass for long-term durability in high-heat engine bays.
• Manufacturer Part Number: T9366

Fits 2019-2022 Ford Ranger Lariat, XL, and XLT (2.3L EcoBoost).

The GFB DV+ (Part #T9365) is a precision-engineered performance upgrade that addresses the common shortcomings of the factory plastic diverter valve. Rather than replacing the entire system, the DV+ retains the fast-acting OE solenoid and ECU control while replacing the internal valve components with high-strength materials. This "keep what works" approach ensures full electrical compatibility and simple installation while providing the mechanical reliability needed for turbocharged engines.

• Superior Response: Delivers 10% faster opening and 50% faster closing speeds compared to the factory diverter valve.
• Billet Construction: Features a CNC-machined billet aluminum housing and a precision brass piston for maximum durability under high boost.
• Boost Retention: Eliminates the boost leaks common in OE plastic valves, ensuring consistent power delivery throughout the RPM range.
• Direct Fit: Bolts directly to the factory location and requires no additional wiring, vacuum hoses, or ECU remapping.
• Manufacturer Part Number: T9365

Fits select 2013-2022 Buick Regal, Cadillac ATS, CT6, and CTS, and Chevrolet Camaro and Malibu models equipped with the 2.0L LTG engine.

The GFB DV+ Diverter Valve (T9363) is engineered to solve the reliability and performance issues common with factory plastic diverter valves. By retaining the factory solenoid and ECU control, the DV+ ensures seamless integration and simple installation while replacing the failure-prone internal components with precision-engineered parts for better boost holding and faster response.

• 10% faster opening and 50% faster closing than the original equipment (OE) factory diverter
• Retains the factory solenoid for perfect ECU integration and diagnostic compatibility
• Replaces internal components that leak or fail under high boost and heat
• Direct bolt-on installation with no additional modifications required
• Designed specifically for the GM 2.0L LTG turbocharged engine platform
• Manufacturer Part Number: T9363

Fits 2011-2017 Nissan Juke (S, SL, SV, Nismo, and Nismo RS).

The GFB DV+ (Part #T9362) is a precision-engineered performance upgrade designed to replace the weak internal components of the factory plastic diverter valve. While many aftermarket solutions discard the entire factory system, the DV+ retains the stock ECU-controlled solenoid. This ensures seamless integration with the vehicle's electronics while replacing the failure-prone plastic valve with a CNC-machined billet housing and a high-performance brass piston.

By maintaining factory solenoid control, the DV+ delivers 10% faster opening and 50% faster closing times compared to the original equipment. This design prevents boost leakage, improves throttle response, and ensures the turbocharger stays on boost during gear changes and rapid throttle transitions. The result is a more reliable forced induction system that can handle increased boost pressures without the common failures associated with OE diaphragms.

• Increased Performance: Delivers 10% faster opening and 50% faster closing than the factory unit.
• OEM Integration: Retains the factory solenoid and ECU control for a true plug-and-play installation without error codes.
• Billet Construction: Features a CNC-machined aluminum housing and a precision brass piston for superior durability under high boost.
• Direct Fit: Bolts directly to the factory location using the original solenoid.
• Manufacturer Part Number: T9362

Vehicle Fitment:

Fits 2016-2018 Ford Focus RS.

The GFB DV+ (T9360) is a performance-engineered upgrade that addresses the common failures of factory plastic diverter valves. Rather than replacing the entire system with a slow-acting pneumatic valve, the DV+ retains the factory solenoid and ECU control. This "keep what works" approach ensures seamless integration with the vehicle's electronics while replacing the weak internal piston and spring with precision-machined metal components for superior boost holding and response.

• Enhanced Response: Delivers 10% faster opening and 50% faster closing compared to the factory diverter valve.
• OEM Integration: Retains the factory solenoid for lightning-fast ECU-controlled operation without the need for vacuum hoses or additional wiring.
• Reliability: Replaces vulnerable plastic internals with high-strength metal components to eliminate boost leaks and diaphragm failure.
• Direct Bolt-On: Designed to install directly into the factory location for a straightforward mechanical upgrade.
• Manufacturer Part Number: T9360

Fits select 2008-2023 Ford, Infiniti, Mercedes-Benz, and Volvo models including Mustang EcoBoost, Fiesta ST, C300, and S60.

The GFB DV+ (T9358) is a performance-oriented diverter valve designed to address the reliability and boost-leak issues common in factory plastic valves. Unlike kits that replace the entire assembly, the DV+ retains the factory electronic solenoid and ECU control to ensure seamless integration and simple installation. By replacing only the internal components with precision-machined brass and aluminum, it provides a superior seal and significantly improved throttle response.

• Enhanced Performance: Delivers 10% faster opening and 50% faster closing times than the original factory diverter.
• Direct Replacement: Fits into the factory mounting position and maintains original ECU-controlled operation without triggering fault codes.
• Heavy-Duty Construction: Replaces failure-prone plastic internals with CNC-machined components for long-term durability under high boost pressures.
• MPN: T9358

Fits select 2012-2018 BMW 228i, 320i, 328i, 428i, 528i, X1, X3, X4, and Z4 models with the N20 engine.

The GFB DV+ (T9357) provides a targeted performance upgrade for your BMW's turbocharger system. Instead of replacing the entire factory diverter valve unit with a generic solution, the DV+ retains the factory solenoid and ECU control for seamless integration and simple installation. By replacing only the internal components prone to leaking or slow response, the DV+ solves common boost issues while significantly improving throttle response.

• 10% faster opening and 50% faster closing than the factory diverter valve
• Retains the OE solenoid for full ECU integration and error-free operation
• Durable construction replaces plastic factory internals for better boost holding
• Direct-fit design bolts to factory mounting points
• Manufacturer Part Number: T9357

Fits select 2010-2022 Alfa Romeo, BMW, Dodge, Fiat, and Jeep models. This GFB DV+ Performance Diverter Valve (Part #T9356) provides a robust solution for factory diverter valves that suffer from boost leaks or slow response. By retaining the factory solenoid and ECU control, the DV+ ensures seamless integration with the vehicle’s electronics while replacing the failure-prone plastic internal components with a precision-machined pilot-actuated valve mechanism.

The DV+ improves upon the factory design by offering 10% faster opening and 50% faster closing speeds. This increased responsiveness ensures that boost is held more effectively during shifts and throttle transitions, resulting in sharper throttle response and more consistent power delivery without the need for a full valve replacement.

• Manufacturer Part Number: T9356
• Direct-fit replacement for the weak internal components of the OE diverter
• 10% faster opening and 50% faster closing than factory units
• Pilot-actuated operation for superior boost holding at high pressures
• Retains factory solenoid for perfect ECU integration and simple installation
• Compatible with BMW N55, Fiat 1.4L MultiAir, and Alfa Romeo 2.9L engines

The GFB DV+ (Part Number T9355) is a performance-oriented diverter valve upgrade engineered for 1.4 TSI Twincharged engines. This solution addresses the common failure points of factory valves by replacing the internal components with precision-machined parts while retaining the factory solenoid and ECU control. This ensure simple installation and maintains the vehicle's diagnostic and safety logic.

• Retains the factory solenoid for seamless ECU integration and reliable operation
• Offers 10% faster opening and 50% faster closing than the factory diverter valve
• Improves boost recovery and throttle response between gear shifts
• Replaces weak plastic factory internals with CNC-machined components for increased durability
• Designed specifically for 1.4 TSI Twin Charged engine platforms
• Manufacturer Part Number: T9355

Fits select 2004-2020 Alfa Romeo 4C, Chevrolet Cobalt SS, Ford Focus ST, Land Rover LR2/Evoque, Porsche 911, and various Volvo models (T5/T6).

The GFB (Go Fast Bits) DV+ T9354 provides a high-performance solution for factory diverter valves that prone to leaking or mechanical failure under boost. By retaining the factory solenoid and ECU control while replacing the internal valve mechanism with precision-engineered components, the DV+ improves throttle response and boost recovery. Its pilot-actuated operation ensures the valve remains closed until pressure is needed to be released, preventing the premature venting common in original equipment.

• Direct replacement for factory diverter valve internal components
• Operates 10% faster on opening and 50% faster on closing than OE valves
• Retains factory solenoid for seamless integration and simple installation
• Billet aluminum housing with a brass piston for extreme durability
• Designed to hold boost pressure without leaking in high-performance applications
• Manufacturer Part Number: T9354

Fits select 2007-2015 Mini Cooper S and John Cooper Works models equipped with the N14 engine. This GFB DV+ (Part Number T9352) is a direct-fit performance solution for the common failure points of the factory diverter valve.

Instead of replacing the entire factory system with a slow-acting pneumatic valve, the DV+ improves upon the original design by keeping what works and replacing what doesn't. It retains the factory solenoid and ECU control for seamless integration and simple installation, ensuring the computer remains in control of the valve timing. By replacing the weak plastic internal parts with a precision-machined brass piston and billet housing, this valve eliminates boost leaks and improves throttle response.

• Direct replacement for factory diverter valve internal components
• Retains factory solenoid for lightning-fast ECU-controlled operation
• 10% faster opening and 50% faster closing than the stock diverter
• Precision-machined brass piston ensures reliable boost holding
• Solves common boost leak and durability issues found in OEM units
• Manufacturer Part Number: T9352

Fits select 2005-2020 Audi, Volkswagen, and Porsche models with the 2.0T engine.

The GFB DV+ T9351 is a high-performance direct replacement for the factory diverter valve. Rather than replacing the entire solenoid system, the DV+ improves upon the original design by retaining the factory solenoid and ECU control while replacing the internal components that are prone to failure. By swapping the weak plastic or rubber diaphragm with precision-machined brass and aluminum components, the DV+ eliminates boost leaks and ensures reliability under high temperatures and increased boost pressures.

• Manufacturer Part Number: T9351
• Improved Performance: Delivers 10% faster opening and 50% faster closing than the factory diverter valve.
• Pilot-Actuated Design: Retains factory solenoid control for seamless integration and sharper throttle response.
• Boost Recovery: Improves boost holding and recovery between gear shifts.
• Simple Installation: Bolts directly into the factory location without requiring additional wiring or hoses.
• Heavy-Duty Construction: Built with CNC-machined metal components for long-term durability in high-performance applications.

Fits select 1997-2021 Audi, VW, Porsche, Saab, and Polaris RZR models (1.8T / 2.3T).

The factory diverter valve on many turbocharged Audi, VW, and Polaris models is a frequent failure point. Constructed from plastic with a rubber diaphragm, these OE units are prone to rupturing, leading to significant boost leaks and power loss. Furthermore, their "normally open" design often compromises part-throttle boost response. The GFB DV+ (T9302) is a precision-engineered solution designed to replace vulnerable factory internals with high-strength, performance-oriented components.

The DV+ utilizes a balanced piston design and CNC-machined metal construction to ensure permanent reliability under extreme boost pressures and temperatures. Unlike the factory valve, the GFB unit maintains a more efficient seal, providing sharper throttle response and ensuring your turbo system holds target boost levels consistently.

• Direct bolt-on replacement for factory plastic/rubber diverter valves
• CNC-machined metal construction ensures reliability under extreme conditions
• Adjustable spring pre-load for optimum throttle response and tuning
• Balanced piston design prevents premature venting or boost leaks
• Manufacturer Part Number: T9302

Fits select 1991-2015 Mitsubishi 3000GT, Eclipse, Lancer Evolution, Ralliart, and 2010-2012 Subaru Legacy 2.5GT.

The GFB Hybrid TMS (Turbo Management System) pioneered the dual-port design to bridge the gap between performance and sound. By staging the two venting outlets, the valve operates as a recirculation unit at low valve lifts to maintain engine stability and MAF sensor compatibility. As boost levels increase and the valve opens further, the atmospheric port is exposed to provide the signature blow-off sound without compromising drivability.

• Versatile Configuration: Can be set for Full Recirculation, 50/50 Dual Port, or Full Atmosphere operation using the provided plugs.
• TMS Technology: Engineered to offer faster throttle response and quicker boost recovery by managing the air pressure more efficiently than factory valves.
• Precision Fit: Features a 33mm inlet and outlet, designed to replace leaking or unreliable factory valves.
• Durable Construction: Built to handle high boost levels where factory plastic valves typically fail.
• Manufacturer Part Number: T9233

Fits select 1997-2009 Audi A4/TT, Volkswagen Golf/Beetle/Passat, and Saab 9-3/9-5 (1.8T / 2.3T).

The GFB Hybrid TMS (Turbo Management System) pioneered the dual port design, offering a versatile solution for turbocharged engines that require a balance between atmospheric sound and engine management compatibility. This valve uses a staged venting system: at low valve lifts, the air is primarily recirculated to maintain smooth idle and low-load drivability. As boost increases and the valve opens further, the atmospheric port is exposed to provide the signature blow-off sound.

Built for performance and flexibility, the Hybrid TMS can be configured for full recirculation, a 50/50 split, or full atmospheric operation using the included plugs. This allows you to tune the valve to your specific vehicle needs, ensuring you get the performance of a modern diverter valve without triggering ECU fault codes or rich-running conditions.

• Dual staged venting outlets for optimized boost response and sound control
• Configurable operation: Full Recirc, 50/50, or Full Atmosphere
• Precision-machined 20mm inlet and 20mm outlet
• Direct replacement for factory Bosch-style plastic diverter valves
• Manufacturer Part Number: T9225
• Included hardware: Configuration plugs

Fits select 2021-2022 Hyundai Elantra, Kona, and Sonata N Line models (2.5T).

The GFB Hybrid TMS Dual Port (T9214) is a versatile turbo management solution that functions as three valves in one. Utilizing GFB's Turbo Management System (TMS) technology, this valve allows you to configure the unit for full recirculation for silent operation, full atmospheric venting for the classic blow-off sound, or a 50/50 split for a balance of both. It is specifically designed to replace the factory diverter valve to improve boost pressure stability and sharpen throttle response during gear shifts.

• Manufacturer Part Number: T9214
• Hybrid Operation: Configurable for recirculating, atmospheric, or 50/50 venting
• CNC machined body for maximum durability and pressure sealing
• Direct bolt-on fitment for the Hyundai 2.5T powertrain
• Designed to hold higher boost levels than the factory plastic valve

Fits 2018-2020 Kia Stinger (3.3T) GT, GT1, GT2, and GTS models.

The GFB Hybrid TMS Dual Port blow off valve utilizes Go Fast Bits' pioneered dual-port technology to provide adjustable venting options for your twin-turbo Kia Stinger. By utilizing a "staged" venting system, this valve prioritizes recirculation at low lift for better throttle response and quiet operation, then opens the atmospheric port during harder driving to deliver the signature blow-off sound. This design ensures consistent performance without the stalling or rich-running issues common with standard atmospheric valves.

These valves are fully configurable using the included plugs, allowing you to set them for full recirculation, a 50/50 split, or full atmospheric operation. This kit includes a pair of valves to replace the factory units on the 3.3L V6 engine.

• Dual staged venting outlets for optimized performance and sound
• Fully configurable: Recirculation, 50/50, or Atmospheric operation
• Direct bolt-on replacement for factory valves
• TMS (Turbo Management System) technology for faster boost recovery
• Manufacturer Part Number: T9212
• Includes two (2) valves and necessary installation hardware

Fits select 2018-2020 Hyundai Elantra GT, Kona, Veloster, and Kia Forte GT (1.6T).

The GFB Hybrid TMS (T9211) brings dual-port technology to your 1.6T GDI engine. Designed to offer the best of both worlds, this valve utilizes a patented staged venting system. Under low-boost conditions and small valve lifts, the unit primarily recirculates air to maintain factory-like driveability and MAF-sensor compatibility. As boost pressure and valve lift increase, the atmospheric port is exposed to deliver the signature blow-off sound without sacrificing performance.

• Manufacturer Part Number: T9211
• TMS Technology: Engineered to help the turbo return to peak boost faster during gear shifts and throttle transitions.
• Configurable Venting: Includes plugs to easily configure the valve for full recirculation, 50/50 dual-port, or full atmosphere operation.
• Dual Staged Outlets: Prioritizes recirculation at low lift to prevent stalling or stumbling.

Authoritative Fitment:

Fits 2018-2020 Hyundai Veloster N and Kia Stinger (2.0T).

The GFB Hybrid TMS (Turbo Management Solution) Dual Outlet valve provides a performance-oriented alternative to factory diverter valves that often leak or fail under pressure. Utilizing GFB's pioneered dual-staged venting technology, this valve manages boost pressure by recirculating air during low-lift operation and exposing the atmospheric port during aggressive driving for a more pronounced blow-off sound. This design ensures smooth drivability without sacrificing the signature turbo sound enthusiasts want.

This valve is highly versatile and can be configured to meet your specific setup requirements. Using the included plugs, you can set the unit for full recirculation (silent operation), a 50/50 split, or full atmospheric operation. The TMS technology is specifically engineered to improve throttle response and reduce turbo lag by ensuring the valve stays closed when not venting, keeping the turbo spinning as fast as possible.

• Manufacturer Part Number: T9210
• Staged dual-port venting for sound and performance
• Fully configurable bias: Full Recirc, 50/50, or Full Atmospheric
• Includes all necessary plugs for configuration
• Replaces weak OE plastic or rubber diaphragm valves
• Precision machined for tight tolerances and long service life

Fits 1990-1994 Mitsubishi Eclipse and 2006-2013 Mazda 3 Mazdaspeed, 6 Mazdaspeed, and CX-7 models.

The GFB Hybrid TMS Dual Port valve utilizes a unique staged venting design to balance performance and acoustics. At low valve lifts, the system recirculates air to maintain factory-like drivability and prevent stalling. As boost pressure increases and the valve opens further, the atmospheric port is exposed to deliver the signature blow-off sound without sacrificing throttle response or causing rich-running conditions.

Engineered with GFB’s Turbo Management System (TMS) technology, this valve is designed to help the turbo return to peak boost faster during gear shifts. The T9208 kit offers maximum versatility; using the included plugs, you can manually configure the unit for full recirculation, a 50/50 split, or full atmospheric operation to suit your specific vehicle setup and preference.

• Manufacturer Part Number: T9208
• Dual-staged venting outlets for optimized low-load drivability
• Modular configuration: Full Recirc, 50/50, or Full Atmosphere
• Includes necessary port plugs for configuration
• Designed for direct bolt-on fitment on supported Mazda and Mitsubishi turbo platforms