1. Introduction and Overview
Thank you for choosing the Speed-X Eco-Tuning module. This digital tuning box, proudly Made in Germany, is engineered to optimize your vehicle's engine performance while simultaneously reducing fuel consumption. It offers an easy self-installation process and incorporates the latest engine protection technologies to ensure safe operation.
The Speed-X module is specifically programmed for vehicles like the DS4 1.2 VTi 96 KW 130 HP (2011-2015), providing a significant increase in power and torque, leading to improved acceleration and a more dynamic driving experience. Its eco-tuning capabilities can result in up to 20% less fuel consumption.

Image 1.1: The Speed-X Eco-Tuning module, a compact black box with the Speed-X logo.
2. Package Contents
Before beginning the installation, please verify that all components are present in your package:
- Speed-X Performance Enhancement Module
- Vehicle-Specific Cable Set
- Assembly Instructions (English language not guaranteed, but visual guides are provided)
- Mounting Material (e.g., zip ties)

Image 2.1: Overview of the Speed-X package contents, including the module, cable harness, instruction guide, and mounting ties.
3. Setup and Installation
The Speed-X module is designed for easy DIY installation, typically taking only minutes. Follow these general steps. Refer to the specific assembly instructions included in your package for detailed, vehicle-specific guidance.
- Prepare the Vehicle: Ensure the vehicle's ignition is off and the engine is cool. Disconnect the battery if instructed by your vehicle's service manual or the specific Speed-X instructions.
- Locate Connection Points: Identify the designated connection points in your engine bay. The Speed-X cable set is designed to connect inline with existing sensors, often the Common-Rail system.
- Connect the Cable Set: Connect the vehicle's series plug to one end of the Speed-X cable harness. Then, connect the other end of the Speed-X cable harness to the Common-Rail connection point on your engine.
- Connect to Speed-X Box: Plug the dedicated cable from the harness into the Speed-X tuning box. Ensure all connections are secure and click into place.
- Secure the Module: Mount the Speed-X module in a safe, dry location within the engine bay using the provided mounting material (e.g., zip ties). Ensure it is away from extreme heat, moving parts, and direct moisture.
- Final Checks: Reconnect the battery if it was disconnected. Double-check all connections before starting the engine.

Image 3.1: Diagram illustrating the easy installation process, showing connections between the series plug, Speed-X cable harness, Common-Rail connection, and the Speed-X box.

Image 3.2: The Speed-X module with its cable connected, highlighting its compact design and integration.
4. Operating Instructions
Once installed, the Speed-X Eco-Tuning module operates automatically. It is a fully digital performance enhancement system that optimizes engine parameters in real-time, ensuring efficient power delivery and fuel management.
Key operational benefits include:
- Full Digital Performance Increase: Utilizes a high-performance CPU for precise engine tuning.
- Increased Torque: Provides higher pulling power, especially noticeable during acceleration.
- Improved Acceleration: Up to 35% more power for quicker response.
- Reduced Consumption: Achieves up to 20% less fuel consumption through optimized torque delivery.

Image 4.1: Visual representation of Speed-X features, including digital performance, increased torque, better acceleration, 36-month warranty, traceless removal, and reduced consumption.
5. Maintenance
The Speed-X Eco-Tuning module is designed to be maintenance-free. Its robust construction ensures long-term reliability. To ensure its longevity and optimal performance, consider the following:
- Environmental Protection: The module is waterproof and heat-resistant, designed to withstand typical engine bay conditions. However, avoid direct exposure to high-pressure water jets during engine cleaning.
- Secure Mounting: Periodically check that the module remains securely mounted and that all cable connections are firm.
- Cleaning: If necessary, gently wipe the module with a dry or slightly damp cloth. Do not use harsh chemicals or abrasive cleaners.

Image 5.1: Illustration highlighting the waterproof and heat-resistant properties of the Speed-X module.
6. Troubleshooting
The Speed-X module is designed for reliable operation. If you experience any issues after installation, consider the following:
- Check Connections: Ensure all cable connections are fully seated and secure. A loose connection is a common cause of issues.
- Review Installation Steps: Re-read the specific assembly instructions to confirm all steps were followed correctly.
- Vehicle Diagnostics: The Speed-X module features traceless removal and is 100% diagnostic neutral. This means it leaves no trace in the vehicle's ECU and will not interfere with diagnostic tools when removed. If you suspect a vehicle issue unrelated to the module, you can easily remove it to revert your vehicle to its stock settings for diagnosis.

Image 6.1: Depiction of the Speed-X module being disconnected, illustrating its traceless removal feature.
If problems persist, please contact SpeedX customer support for assistance.
7. Specifications
| Attribute | Detail |
|---|---|
| Model | SPXCHD_549258 |
| Style | Modern |
| Brand | SpeedX |
| Material | Aluminum Plastic |
| Color | Black/Blue |
| Item Weight | 500 Grams (1.1 pounds) |
| Package Dimensions | 9.84 x 7.87 x 3.94 inches |
| Manufacturer | SpeedX |
8. Warranty and Support
The Speed-X Eco-Tuning module comes with a comprehensive 36-month full warranty. This warranty covers manufacturing defects and ensures peace of mind regarding your investment.
For technical support, warranty claims, or any questions regarding your Speed-X product, please refer to the contact information provided in your product packaging or visit the official SpeedX website. When contacting support, please have your product model number (SPXCHD_549258) and purchase details ready.





