BMW N55 STAGE II EWG
UPGRADED BILLET TURBOCHARGER

Engineered for the BMW N55 Enthusiast Who Wants More Than a Factory Turbo

The XS-POWER Stage II N55 EWG upgraded turbocharger is designed for performance-oriented BMW N55 3.0L applications using an electronic wastegate configuration. It combines an enlarged billet compressor, high-flow turbine, upgraded thrust bearing assembly and stainless steel turbofold construction in a stock-location-style performance package.

For owners upgrading an N55-powered BMW M235i, 335i, 435i, 535i or compatible M2, this turbocharger offers increased airflow potential beyond the original turbocharger while retaining a configuration intended for compatible factory-style mounting locations.

The Stage II platform is aimed at properly engineered street-performance and enthusiast builds where turbocharger efficiency, mechanical durability and supporting engine calibration matter as much as peak horsepower.

This listing is for the EWG version of the BMW N55 turbocharger. BMW produced N55 engines with both pneumatic wastegate (PWG) and electronic wastegate (EWG) systems. These configurations are not automatically interchangeable.

Verify your existing turbocharger, actuator, OEM part number and vehicle configuration before purchasing. Model year alone is not sufficient to confirm compatibility.

Engineered Performance Features

7+7 Point-Milled Billet Compressor
The upgraded 53.5mm / 64mm compressor wheel is designed to provide increased airflow capacity for modified BMW N55 engines operating beyond factory turbocharger performance requirements.

High-Flow 9-Blade Turbine
The 52mm / 56mm turbine configuration is designed to accommodate increased exhaust flow associated with higher-output N55 performance applications.

Upgraded 360-Degree Thrust Bearing System
The large-diameter thrust assembly is intended to improve thrust-load support under demanding turbocharger operating conditions.

Dual Oil Seal Configuration
The supplied design specification includes dual compressor-side and dual turbine-side oil seals.

VSR High-Speed Balancing
The turbocharger is specified as VSR high-speed balanced to support rotating assembly precision and operational stability.

Stainless Steel Turbofold
The stainless steel exhaust manifold construction is designed for high-temperature turbocharger operation.

Stock-Location-Style Installation
Designed around compatible factory-style turbo mounting locations. Supporting hardware, piping or other installation modifications may still be required depending on the vehicle.

Technical Specifications

*Power capability is a stated application target, not a verified or guaranteed wheel-horsepower result. Actual output depends on calibration, fuel, boost, engine condition, drivetrain and supporting modifications.

BMW N55 Vehicle Application Reference

This Stage II EWG turbocharger is intended for compatible BMW N55 electronic-wastegate configurations. The following BMW models are commonly associated with the N55 performance platform. Appearance in this table does not establish direct bolt-on fitment.

Why Choose an Upgraded N55 Stage II Turbo?

The factory BMW N55 turbocharger is engineered around original equipment power, response, emissions and drivability requirements. As performance targets increase, additional airflow capacity becomes an important consideration.

The XS-POWER Stage II EWG upgrade combines a larger billet compressor and high-flow turbine with upgraded internal support components for modified N55 applications.

Potential advantages in a properly matched performance build include:

• Increased compressor airflow capacity over factory-style configurations
• Additional headroom for professionally calibrated performance applications
• High-flow turbine design for increased exhaust energy requirements
• Upgraded thrust-bearing construction
• VSR-balanced rotating assembly
• Compatibility potential with upgraded charge-air cooling and intake systems
• Stock-location-style configuration for compatible BMW N55 EWG installations

Turbocharger response, peak output and boost behavior depend on the complete engine setup and calibration.

Recommended Supporting Modifications

A properly engineered BMW N55 turbo upgrade is more than a turbocharger replacement. Supporting systems should be evaluated for the intended power target.

Important: Do not assume a generic stock-turbo or unrelated Stage 2 ECU tune is suitable for this upgraded turbocharger. Consult a qualified BMW N55 tuner before installation.

Installation and Reliability Considerations

Correct installation is essential to turbocharger service life and performance.

• Verify EWG compatibility and turbocharger mounting interfaces.
• Inspect engine oil supply and oil return systems for restrictions or contamination.
• Confirm cooling connections and all applicable sealing surfaces.
• Inspect intake and charge-air plumbing for debris and leaks.
• Follow appropriate turbocharger oil-priming procedures.
• Confirm actuator operation and calibration requirements with the tuner.
• Verify boost control and air-fuel operation before full-load use.
• Use professional installation practices and manufacturer-approved torque procedures.

Professional installation and appropriate ECU calibration are strongly recommended. This is a performance upgrade, not a guaranteed direct replacement for every BMW N55 vehicle.

Package Contents

1 x XS-POWER BMW N55 Stage II EWG Upgraded Turbocharger Assembly

Review the actual listing photographs for included accessories and hardware. Additional intake components, gaskets, oil lines, coolant lines, tuning software and installation hardware are not included unless specifically shown or stated.

BMW N55 Stage II Turbo - Frequently Asked Questions

What is the difference between a BMW N55 EWG and PWG turbo?
EWG uses an electronically controlled wastegate actuator, while PWG uses a pneumatic actuator system. The turbocharger and control arrangements can differ. This listing is for the compatible EWG configuration.

Is this a BMW N55 hybrid turbo upgrade?
It is an upgraded stock-location-style N55 performance turbocharger with a larger billet compressor and high-flow turbine. Exact installation compatibility must be verified.

What compressor wheel does the Stage II use?
A 53.5mm / 64mm point-milled billet compressor wheel with a 7+7 blade configuration.

What turbine wheel is installed?
A high-flow 9-blade turbine wheel measuring 52mm / 56mm.

Does the turbo use an upgraded thrust bearing?
Yes. The supplied specification identifies an upgraded large-diameter 360-degree thrust bearing system.

Is the turbocharger balanced?
The turbocharger is specified as VSR high-speed balanced.

Can this turbo support 550+ wheel horsepower?
550+ WHP is the stated build capability. It is not a guaranteed output. Actual results depend on engine condition, fuel system, calibration, supporting modifications and drivetrain.

Will this turbo fit my BMW M2, M235i, 335i or 435i?
Selected N55 EWG applications may be compatible. Confirm your vehicle's production configuration, original turbocharger and mounting requirements before ordering.

Can I use my existing Stage 1 or Stage 2 tune?
Do not assume so. The ECU calibration must be appropriate for the exact upgraded turbocharger, wastegate system and supporting hardware.

Should I choose Stage II or Stage III?
That depends on your horsepower goal, fuel, boost requirements and supporting modifications. Discuss your intended setup before selecting the turbocharger stage.

BMW Turbocharger Performance - Worldwide

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