BMW E90 320si 173HP N45 Petrol Engine ECU Kit DME 7560955 + CAS2 + 2 Keys Manual

BMW E90 320si 173HP N45 Petrol Engine ECU Kit DME + CAS2 + 2 Keys Manual is a specialized electronic control module designed for the N45 engine unit in the 320si version with 173 HP. The controller belongs to the Electronic control modules and controllers category and is dedicated to working with a petrol engine and a manual transmission, ensuring precise management of the powertrain's operation.

Specifications and technical data

• SKU: 7560955-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7560955
• Substitutable numbers: 12147560956, 7560956, 12147560955, 7560955, 0261201108, 0 261 201 108, 61356943791, 6943791
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented engine computer is responsible for comprehensive control of the N45 unit in the BMW E90 320si model, including combustion parameter control, engine accessory management, and communication with the drivetrain. Using a dedicated controller for the petrol version with a manual transmission allows for maintaining correct operating maps, stable engine performance, and proper communication with other vehicle systems.

Thanks to its OEM design, the controller is optimized for the electrical architecture of the BMW E90, which helps maintain factory performance characteristics and throttle response. This solution is particularly important in the high-performance, sporty 320si variant, where control precision has a direct impact on dynamics and performance repeatability.

Compatibility and interchangeable numbers

The engine computer has an assigned OEM part number and a set of interchangeable numbers, which facilitates selecting the appropriate controller for a specific vehicle configuration. The presence of multiple reference numbers increases the chances of matching the module to various equipment variants within the same platform while maintaining compatibility with the vehicle's electrical installation and software.

Before purchasing, it is recommended to compare the part number and interchangeable numbers with the data in the vehicle or service documentation. This approach minimizes the risk of incompatibility and allows for utilizing the full functionality of the controller in a petrol system with a manual transmission.

Characteristics of the used module

The offered engine computer is a used component, which provides a cost-effective solution while maintaining the manufacturer's original specifications. Choosing an OEM controller from the secondary market allows for economical repair or replacement of a damaged module without the need to resort to replacements with uncertain parameters.

A used controller, after proper matching and potential adaptation in the vehicle, can restore full functionality of the engine control system, ensuring stable operation of the N45 unit in the BMW E90 320si. This is a practical solution both for workshops specializing in the BMW brand and for conscious users looking for technically compatible components.

Benefits of using an original BMW controller

Using an original module from the Electronic control modules and controllers category translates into a number of technical benefits:

• preservation of factory injection and ignition maps for the N45 petrol engine,
• proper cooperation with the manual transmission and onboard systems,
• compatibility with the vehicle's communication network architecture,
• possibility of diagnostics and programming using standard BMW service tools.

For users who care about maintaining the driving characteristics typical of the 320si version, choosing an original controller is a solution consistent with the manufacturer's assumptions and facilitates further vehicle service.

Expanding knowledge about used electronics

If you want to better understand when choosing a used engine controller is justified and what to pay attention to during selection and installation, check out the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?. You will find practical tips there regarding compatibility verification, diagnostics, and safe use of electronics from the secondary market.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as controllers, ECU modules, or electronic management units, check the available parts in the BMW electronic control modules and controllers category.