RaceChip RS for Mercedes-Benz CLS (C257) CLS 400 d 2017-

RaceChip RS for Mercedes-Benz CLS (C257) CLS 400 d 2017-

RaceChip RS for Mercedes-Benz CLS (C257) CLS 400 d 2017- is a high-performance chip tuning module designed to enhance engine power, torque and acceleration through intelligent, vehicle-specific optimization. Combining high-quality automotive hardware with advanced engine tuning software, RS delivers an excellent balance between improved performance, driving comfort and everyday usability. As one of RaceChip’s bestselling performance modules, the RS provides an accessible solution for drivers looking to unlock additional engine potential without permanently modifying the original engine control unit (ECU). With six adjustable fine-tuning mappings, optional smartphone control and straightforward Plug & Drive installation, RS offers a flexible and convenient performance upgrade for your Mercedes-Benz CLS (C257).

RaceChip RS for Mercedes-Benz CLS (C257) CLS 400 d 2017- Performance Gains

The RaceChip RS is specifically configured for the engine characteristics of your Mercedes-Benz CLS (C257) CLS 400 d. Its advanced optimization software is designed to increase available horsepower and torque, delivering improved acceleration and stronger pulling power across the engine’s operating range.

• Original Engine Power: 330 HP / 243 kW
• Original Engine Torque: 700 Nm
• Additional Horsepower: +34 HP
• Additional Power: +25 kW
• Additional Torque: +67 Nm
• Maximum Power with RaceChip: 364 HP / 268 kW
• Maximum Torque with RaceChip: Nm

With optimized engine output, RS can provide noticeably stronger acceleration, improved flexibility at lower engine speeds and a more responsive driving experience. Actual performance gains may vary depending on engine condition, fuel quality, vehicle configuration, environmental conditions and other operating factors.

Advanced Engine-Specific Optimization Technology

RaceChip RS combines modern automotive hardware with sophisticated performance optimization software developed for individual engine applications. Rather than relying on a generic tuning configuration, RS uses engine-specific adjustments to optimize relevant sensor signals and improve the engine’s power delivery. This approach allows the tuning module to work alongside the vehicle’s original engine management system while retaining factory engine protection functions. The result is a performance upgrade designed to deliver additional power and torque without sacrificing the smooth operation required for everyday driving.

6 Fine-Tuning Mappings for Personalized Performance

The RaceChip RS features 6 adjustable fine-tuning mappings, providing flexibility to adapt the tuning characteristics to the vehicle’s engine and individual driving preferences. Each RS module is supplied with a vehicle-specific base mapping. Additional fine-tuning can be performed using the rotary control located on the front of the module. The six adjustment levels allow drivers to gradually modify the tuning response and select a configuration suitable for their engine’s characteristics. This adjustment system makes RaceChip RS an excellent choice for drivers who want greater control over their vehicle’s performance without complicated software modifications or specialist equipment.

Optional RaceChip App Control

RaceChip RS supports optional smartphone App Control, allowing drivers to select between three professionally calibrated tuning modes directly from a compatible mobile device.

• Efficiency Mode: Designed for smoother everyday driving and potentially more economical fuel consumption.
• Sport Mode: Provides stronger acceleration and more dynamic engine response for spirited driving.
• Race Mode: Delivers the most performance-oriented tuning configuration for maximum driving enjoyment.

The RaceChip application also provides access to additional functions, including:

• Returning to the original factory tuning configuration
• Support-assisted fine-tuning
• Automatic software updates
• Control of compatible RaceChip XLR throttle tuning systems
• Expanded service and configuration functions

Important: RaceChip App Control is an optional feature available at an additional cost of €59. It is not included unless selected with the product. Available functions may vary depending on the vehicle and configuration.

Improved Acceleration and Driving Dynamics

By increasing available engine horsepower and torque, RaceChip RS helps improve the acceleration and pulling power of your Mercedes-Benz CLS (C257). Additional torque can make everyday driving more flexible, particularly when accelerating from lower engine speeds, overtaking other vehicles or joining motorway traffic. The optimized engine response also contributes to a more engaging driving experience on winding roads and during dynamic acceleration. RaceChip RS is designed to provide performance improvements while preserving the vehicle’s everyday usability and the familiar characteristics of its original engine management system.

Plug & Drive Installation of RaceChip RS for Mercedes-Benz CLS (C257) CLS 400 d 2017-

RaceChip RS follows the manufacturer’s convenient Plug & Drive installation concept. The tuning module connects to the relevant engine sensors using the supplied vehicle-specific wiring harness. Unlike traditional ECU remapping, this installation does not require permanent modification of the original engine control software. Installation can often be completed within a short period using the included vehicle-specific instructions. RaceChip technical support is also available to assist with installation-related questions. The included stock plug allows the original tuning configuration to be restored when the performance module is disconnected according to the manufacturer’s instructions. Installation time and complexity depend on the vehicle and accessibility of the required engine connections.

Engine Safety and 1-Year Warranty

RaceChip develops its tuning solutions with consideration for the operating characteristics and existing performance capabilities of each supported engine. The RaceChip RS uses engine-specific calibration to provide increased performance while working alongside the vehicle’s original engine management and protection systems. The product is offered with a 1-year engine warranty providing coverage of up to €3,000, subject to the manufacturer’s eligibility requirements, warranty conditions and applicable regional restrictions. RaceChip also provides lifetime software updates, helping ensure continued software support for the tuning module throughout its supported service life.

RaceChip RS Vehicle Compatibility

This RaceChip RS performance module is configured for the following vehicle application:

• Manufacturer: Mercedes-Benz
• Model: CLS (C257)
• Vehicle: CLS 400 d
• Production Year: 2017-
• Fuel Type: Diesel
• Engine Capacity: 2925 cc
• Original Power: 330 HP / 243 kW
• Original Torque: 700 Nm
• HSN/TSN: 2222/BAG

Before ordering, verify the vehicle model, engine specification, production year and compatibility information. Different engine variants may require different RaceChip hardware or software configurations.

RaceChip RS Product Specifications

• Brand: RaceChip
• Product Series: RS
• GTIN: 4062009288618
• Tuning Type: Plug & Play performance module
• Fine-Tuning: 6 adjustable mappings
• Adjustment Method: Rotary control on the module
• App Control: Optional
• Software Updates: Lifetime
• Engine Warranty: 1 year, up to €3,000, subject to terms
• Installation: Vehicle-specific Plug & Drive system

What’s Included with RaceChip RS for Mercedes-Benz CLS (C257) CLS 400 d 2017-?

• RS performance module
• Vehicle-specific wiring kit
• 360-degree fixing clips
• Stock plug
• Vehicle-specific fitting instructions
• Cable ties

Why Choose RaceChip RS?

RaceChip RS combines engine-specific performance optimization, six adjustable fine-tuning mappings and convenient installation in a versatile tuning solution. Its advanced software is developed to increase horsepower and torque while maintaining smooth and predictable engine response. Optional smartphone control provides additional flexibility, while the manufacturer’s warranty and lifetime software updates offer further value. For drivers who want stronger acceleration, improved pulling power and a more engaging driving experience without permanent ECU software modifications, RaceChip RS offers a practical performance upgrade. Upgrade your Mercedes-Benz CLS (C257) with RS and enjoy increased horsepower, higher torque and optimized engine performance with advanced RaceChip tuning technology.Images for illustration only. Actual parts supplied may differ depending on vehicle.