Audi S3 8V 2.0 TFSI 300HP CJXC Quattro Engine ECU 06K907425B Automatic

Audi S3 8V 2.0 TFSI 300HP CJXC Quattro Engine ECU is a factory electronic control unit designed for the 300 HP petrol engine. Thanks to precisely programmed operating maps and compatibility with the quattro drive system, it ensures stable powertrain operation and proper integration with the automatic transmission. This solution is dedicated to users who expect to maintain the original engine performance and electronic parameters.

Specifications and technical data

• SKU: 06K907425B-7
• Mark: Audi
• Condition: Used
• OEM Part Number: 06K907425B
• Substitutable numbers: 06K907425B, 06K 907 425 B, 5WA18004
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The presented controller belongs to the Electronic control modules and ECUs category and is specifically designed for the 2.0 TFSI engine in the CJXC version with quattro drive. It is responsible for monitoring key engine operating parameters, such as fuel injection, ignition timing, and interaction with safety systems, which translates into predictable performance and consistent operation with other vehicle systems.

The module is adapted for petrol fuel and for use with an automatic transmission, which is crucial when selecting the correct ECU for a specific Audi S3 8V configuration. Using the correct controller helps avoid software compatibility issues and communication errors within the vehicle's network.

Benefits of using an original ECU

Using a factory controller in an Audi S3 8V ensures:

• preservation of the engine characteristics intended by the manufacturer,
• proper cooperation with the quattro drive and safety systems,
• consistency with the electrical installation and other modules in the vehicle,
• the possibility of further diagnostics using standard service tools.

As a used component, the controller is an attractive cost-effective solution for engine electronics repairs, allowing for the restoration of vehicle functionality without the need to invest in a new module. This is particularly important for advanced units, where control electronics have a key impact on refinement and performance.

Selection and installation in the vehicle

When selecting a controller for an Audi S3 8V 2.0 TFSI 300HP CJXC Quattro Engine ECU, attention must be paid to compatibility with the drive configuration and fuel type. A properly selected module facilitates the adaptation and programming process in the vehicle and minimizes the risk of communication errors with other systems. Installation should be performed by a workshop experienced in working with Audi electronics, which will allow for the correct execution of coding procedures and potential synchronization with the immobilizer.

For users considering the purchase of a used ECU, practical tips on verifying and preparing the module for operation may be useful. A detailed discussion of this topic can be found in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which explains what to look for when choosing used automotive electronics.

Audi electronic control modules – expansion and service

If you are planning a comprehensive repair or upgrade of your Audi's engine area and need other components from the same group, such as engine controllers, drivetrain management modules, or auxiliary system controllers, check out the available parts in the Audi electronic control modules and ECUs category.

For drivers interested in a broader look at the brand's sports designs, including differences in drivetrains and electronic solutions between standard and sports versions, the material Audi RS vs other models – what is hidden under the hood and chassis?, which compares selected technical solutions used in the Audi range, may be helpful.