🔧 Product Description
The GFB Hybrid TMS Dual Outlet Blow-Off Valve (33mm inlet / 33mm outlet) is a legendary performance valve designed for a wide range of Mitsubishi EVO I–X and 4G63/4G93/4B11T turbo platforms, delivering the perfect balance of sound, reliability, and boost control.
Originally engineered as the world’s first dual-port blow-off valve, the Hybrid combines recirculation + atmosphere venting in a staged design that improves drivability while still delivering the iconic blow-off sound.
⚙️ Key Features
- Dual outlet Hybrid TMS design (recirc + atmosphere)
- 33mm inlet / 33mm outlet configuration
- Direct-fit for Mitsubishi EVO I–X platforms
- CNC-machined aluminium construction
- Adjustable venting bias (100% recirc / 50-50 / 100% atmosphere)
- Staged valve operation for improved drivability
- Supports high-boost turbo applications
- Bolt-on installation – no fabrication required
🏁 Performance Benefits
⚡ Improved Boost Recovery
The staged dual-port system helps the turbo maintain stability and return to boost faster between gear changes.
🚀 Stronger Throttle Response
Reduces compressor surge and improves airflow control during throttle lift events.
🔊 Signature Blow-Off Sound
Provides aggressive venting noise when set to atmosphere mode, without sacrificing drivability.
🔒 Stable MAF-Friendly Operation
Recirculation port opens first to maintain air metering accuracy and prevent stalling or backfiring.
🔬 How It Works
The Hybrid TMS system uses a two-stage venting design:
- Step 1: Recirculation port opens first → stabilises airflow & protects drivability
- Step 2: Atmosphere port opens under higher demand → delivers blow-off sound
👉 This controlled venting strategy allows performance and sound without the typical compromises of single-outlet BOVs.
🚗 Vehicle Applications
Mitsubishi
- Lancer Evolution I–III
- Lancer Evolution IV–IX
- Lancer Evolution X
- Lancer GSR / Ralliart
- GTO Twin Turbo (6G72)
- 3000GT VR-4
- Eclipse 2G Turbo (4G63T)
- Galant VR-4
- Legnum VR-4
- Colt Ralliart
Subaru
- Liberty / Legacy GT (BM / BR, MY10–14)
Dodge
- Dodge Stealth (Twin Turbo AWD)
🔩 Specifications
- Product Type: Dual outlet blow-off valve
- Technology: Hybrid TMS (Turbo Management System)
- Inlet/Outlet: 33mm / 33mm
- Material: CNC-machined aluminium
- Venting Modes: Recirc / 50-50 / Atmosphere
- Fitment: Direct bolt-on
- Brand: Go Fast Bits (GFB)
🛠️ Installation Notes
- Direct replacement for OEM diverter valve (application dependent)
- No welding or fabrication required
- Vacuum line connection to factory setup
- Adjustable venting setup depending on driving preference
- Recommended for tuned or high-boost applications
💡 Why Choose the Hybrid TMS?
If you want:
- OEM drivability with performance tuning
- A proper dual-port BOV system (not a simple vent-only valve)
- Strong boost recovery and reduced turbo lag
- Adjustable sound vs performance balance
👉 The Hybrid TMS is one of the most versatile and iconic blow-off valves in turbo performance history.
🏆 Perfect For
- Mitsubishi EVO street & track builds
- Turbocharged AWD performance cars
- Drivers wanting both sound + reliability
- High-boost tuned 4G63 / 4B11T engines
✅ Summary
The GFB Hybrid TMS Dual Outlet (33mm) delivers a proven dual-stage blow-off valve system for Mitsubishi EVO platforms and related turbo engines, combining controlled recirculation, aggressive sound capability, and improved boost response in a reliable bolt-on package.
