Tomioka Racing 19T DCBB Turbo Upgrade for BMW N20/N26 – Pneumatic Wastegate (TR-TW2013)
Upgrade your BMW N20 or N26 engine with the Tomioka Racing TR-TW2013 19T turbocharger. Featuring a precision-machined billet compressor wheel, Dual Ceramic Ball Bearing cartridge, and factory-style installation, the TR-TW2013 is engineered to provide improved airflow, responsive boost, and power capability up to 345 HP without requiring a core exchange.
Tomioka Racing 19T Turbo Upgrade for BMW N20 and N26 Engines
The Tomioka Racing TR-TW2013 is a performance turbocharger upgrade designed for compatible BMW N20 and N26 engines equipped with a pneumatic wastegate.
Designed as a factory-style replacement for compatible original turbochargers, the TR-TW2013 combines a larger billet compressor wheel with an internally ported factory-size compressor housing. This increases airflow capacity while maintaining factory-style fitment and appearance.
At the center of the turbocharger is Tomioka Racing’s Dual Ceramic Ball Bearing, or DCBB, cartridge. This bearing system is designed to reduce friction and improve turbocharger response, boost recovery, and durability compared with a conventional journal-bearing configuration.
With power capability up to 345 HP, the TR-TW2013 is ideal for BMW owners looking for a responsive street turbo upgrade without converting to a complicated custom turbo system.
Billet Compressor Wheel
The TR-TW2013 uses a precision-machined billet compressor wheel measuring:
- 46.0 mm inducer
- 58.0 mm exducer
The larger compressor wheel increases airflow capacity compared with the original factory turbocharger, supporting stronger boost and improved performance throughout the usable RPM range.
Dual Ceramic Ball Bearing Technology
The Dual Ceramic Ball Bearing cartridge reduces friction within the turbocharger rotating assembly. This design is intended to provide:
- Faster transient response
- Quicker boost recovery between gear changes
- Improved turbocharger efficiency
- Responsive street-driving characteristics
- Increased durability under performance use
Factory-Style Bolt-On Installation
The TR-TW2013 retains the factory-style BMW N20 turbocharger configuration and is designed as a bolt-on replacement for compatible applications.
No core exchange is required, allowing you to retain your original turbocharger.
BMW used different turbochargers and wastegate configurations across N20 and N26 models. Customers must confirm the original turbocharger number and wastegate type before ordering.
Key Features
- Designed for compatible BMW N20 and N26 engines
- Pneumatic wastegate configuration
- 19T performance turbocharger specification
- Precision-machined billet compressor wheel
- Dual Ceramic Ball Bearing cartridge
- Internally ported factory-size compressor housing
- Improved airflow compared with the original turbocharger
- Factory-style bolt-on installation
- No core exchange required
- Power capability up to 345 HP
- Compatible with OEM turbo reference number 49477-02107
Technical Specifications
Tomioka Racing Part Number: TR-TW2013
Turbo Specification: 19T
Bearing System: Dual Ceramic Ball Bearing
Wastegate Type: Pneumatic
Turbo Inlet Size: 1.8 inches
Flange: Standard BMW N20
Compressor Wheel Inducer: 46.0 mm
Compressor Wheel Exducer: 58.0 mm
Turbine Wheel Inducer: 41.2 mm
Turbine Wheel Exducer: 47.0 mm
Turbine Housing: 6.0 cm²
Maximum Rated Power: Up to 345 HP
OEM Turbo Reference: 49477-02107
Core Exchange: Not required
Vehicle Applications
- BMW E84 X1 16i
- BMW E89 Z4 18i
- BMW 528i with N20 engine
- BMW F07 5 Series Gran Turismo
- BMW F10 520i, 528i, and 528i xDrive
- BMW F11 520i and 528i
- BMW F20 and F21 125i
- BMW F22 models with a compatible N20 turbo configuration
- BMW X3 18i, 20i, and 28i
- BMW X4 20i and 28i
- Other BMW N20 and N26 vehicles using OEM turbo number 49477-02107
Important Fitment Notice
Do not order based only on the vehicle model or engine designation.
BMW N20 and N26 vehicles may use either pneumatic or electronic wastegate turbochargers depending on the model, production date, and market. Before ordering, verify the following:
- The vehicle has a pneumatic wastegate.
- The original turbocharger matches OEM reference number 49477-02107.
- The compressor inlet, oil lines, coolant lines, and mounting flange match the original turbocharger.
- The vehicle has not been converted to a different turbocharger or wastegate configuration.
Contact Tomioka Racing with your vehicle identification number and clear photographs of the original turbocharger if you need assistance confirming compatibility.
Performance and Tuning Notice
The TR-TW2013 has a maximum rated power capability of up to 345 HP. Actual output will vary depending on:
- ECU calibration
- Fuel quality and octane
- Boost pressure
- Intercooler efficiency
- Intake and exhaust modifications
- Engine condition
- Fuel-system capacity
- Ambient temperature
- Dynamometer type
Professional installation and vehicle-specific ECU calibration are strongly recommended. The turbocharger should not be operated at elevated boost pressure using an unmodified factory calibration.
Recommended Supporting Upgrades
- Performance intercooler
- High-flow charge pipe
- Upgraded intake system
- High-flow downpipe where legally permitted
- Fresh engine oil and oil filter
- New turbocharger oil-feed line when necessary
- New installation gaskets and sealing washers
- Properly selected spark plugs
- Vehicle-specific ECU calibration
- Inspection of the PCV and crankcase ventilation system
Emissions-related components must comply with all applicable federal, state, and local regulations.
Frequently Asked Questions
Is the TR-TW2013 a direct bolt-on turbo?
It is designed as a factory-style bolt-on replacement for compatible BMW N20 and N26 vehicles using the correct pneumatic-wastegate turbocharger configuration.
Does the turbo require a core exchange?
No. A core exchange is not required, allowing you to retain your original turbocharger.
Does it fit every BMW N20 or N26 vehicle?
No. BMW used different wastegate and turbocharger configurations. Confirm that the vehicle has a pneumatic wastegate and uses OEM turbo reference number 49477-02107 before ordering.
How much power can it support?
The TR-TW2013 is rated for power capability up to 345 HP. Actual results will depend on the vehicle setup, fuel, supporting modifications, engine condition, and ECU calibration.
Is ECU tuning required?
Vehicle-specific ECU tuning is strongly recommended to properly manage boost pressure, fueling, ignition timing, and torque control.
Is professional installation recommended?
Yes. Professional installation is strongly recommended to ensure proper oil supply, coolant connections, wastegate operation, sealing, and turbocharger break-in.