🔧 Product Description
The GFB DV+ T9357 Diverter Valve – BMW N20 Engine is a high-performance OEM replacement upgrade designed for a wide range of BMW turbocharged applications.
The DV+ system is engineered to retain the factory ECU-controlled solenoid while replacing the weak internal plastic valve components with a precision-machined metal assembly. This delivers significantly improved reliability, sharper response, and superior boost control under load.
Built around GFB’s proven TMS (Turbo Management System) technology, the DV+ T9357 provides faster boost recovery, improved throttle response, and stronger boost holding for both stock and tuned BMW N20 engines.
⚙️ Key Features
- Direct-fit OEM replacement diverter valve (BMW N20 platform)
- Retains factory solenoid coil for seamless ECU integration
- Replaces plastic internals with billet aluminium & brass piston
- Patented pilot-actuated valve design
- CNC-machined precision construction
- Designed for stock and tuned turbo applications
- Maintains full ECU control of valve operation
- No springs or periodic rebuilds required
- Designed for high boost reliability
🏁 Performance Benefits
⚡ Faster Boost Recovery
Improves return-to-boost time by up to 30% faster than factory diverter valves during gear changes.
🚀 Sharper Throttle Response
Reduces delay caused by factory diaphragm-style valve operation.
🔒 Improved Boost Holding
Prevents leakage common in OEM plastic valve assemblies, especially on tuned engines.
🛠️ Improved Reliability Under Boost
Metal construction eliminates failure points found in factory plastic components.
🔬 TMS Technology Explained
GFB’s Turbo Management System (TMS) ensures optimal valve operation by:
- Keeping the valve closed under boost
- Opening instantly on throttle lift
- Maintaining stable airflow during shifts
- Reducing compressor surge and airflow instability
👉 Result: faster spool recovery, improved drivability, and consistent boost delivery across all driving conditions.
⚙️ Engineering Upgrade Overview
The factory BMW N20 diverter valve retains a strong ECU-controlled solenoid, but the internal valve mechanism is a known weak point under higher boost levels.
The DV+ T9357 solves this by replacing only the internal valve assembly with a billet aluminium housing and precision brass piston, ensuring long-term durability while preserving OEM electronic control.
🚗 Vehicle Applications
- BMW 1 Series (E84 / F20 variants with N20)
- BMW 2 Series F22 / F23 (220i / 228i N20)
- BMW 3 Series F30 / F31 / F34 / F35 (320i / 328i N20)
- BMW 4 Series F32 / F33 / F36 (420i / 428i N20)
- BMW 5 Series F10 / F11 / F07 (520i / 528i N20)
- BMW X1 E84 (sDrive / xDrive N20)
- BMW X3 F25 (xDrive20i / xDrive28i N20)
- BMW X4 F26 (xDrive20i / xDrive28i N20)
- BMW Z4 E89 (sDrive20i / sDrive28i N20)
🔩 Specifications
- Product Type: OEM Replacement Diverter Valve
- Model: GFB DV+ T9357
- Engine: BMW N20
- Material: Billet aluminium & brass internals
- Technology: TMS (Turbo Management System)
- Fitment: Direct bolt-on OEM replacement
- ECU Compatibility: Fully retained factory control
🛠️ Installation Notes
- Direct replacement for factory BMW N20 diverter valve
- No ECU tuning required
- Retains OEM solenoid and wiring
- Suitable for stock and tuned turbo setups
- Vacuum system remains unchanged
💡 Why Choose the DV+ T9357?
If you want:
- Stronger boost control on BMW N20 engines
- Faster throttle response and recovery
- OEM-style drivability with performance gains
- Long-term reliability under higher boost
- Simple bolt-on installation with no complications
👉 The DV+ T9357 is one of the most effective and reliable upgrades for BMW turbocharged N20 platforms.
🏆 Perfect For
- BMW street performance builds
- Tuned turbocharged N20 engines
- OEM+ reliability upgrades
- Daily driven performance cars
- Enthusiasts wanting sharper throttle response without drivability loss
