Mercedes-AMG GLC63 S X253/C253 Remapping and Tuning
Unlock the full potential of your Mercedes-AMG GLC63 S X253/C253 with professional Stage 1 and Stage 2 ECU remapping from Onyx Performance in Slough, Berkshire. Our performance tuning is designed to enhance power, torque and throttle response while maintaining smooth, refined drivability.
Powered by a 4.0-litre V8 BiTurbo petrol engine, the GLC63 S delivers impressive performance as standard. With professional ECU calibration, we can optimise the engine’s performance and deliver stronger acceleration and increased power throughout the rev range.
Suitable for 2017–2022 Mercedes-AMG GLC63 S X253/C253 models.
MERCEDES-AMG GLC63 S X253/C253 STAGE 1 REMAP
A Stage 1 remap optimises the factory ECU software to improve engine performance without requiring additional hardware modifications. Our calibration focuses on delivering increased power, torque and throttle response while retaining everyday drivability.
Standard: 510HP / 700Nm
Stage 1: Up to 600HP / 800Nm
Benefits of a Stage 1 remap include:
- Increased engine power and torque
- Sharper throttle response
- Improved acceleration and in-gear performance
- Enhanced power delivery throughout the rev range
- Smooth and refined everyday driving
MERCEDES-AMG GLC63 S X253/C253 STAGE 2 TUNING
Stage 2 tuning takes performance further with an ECU calibration designed to work alongside suitable supporting hardware upgrades. This allows the 4.0 V8 BiTurbo engine to achieve greater performance potential.
Stage 2: Up to 640HP / 850Nm
Call for a Stage 2 quote.
Stage 2 supporting upgrades may include:
- Performance exhaust system
- Sports catalytic converters, where suitable and road legal
- Improved air intake system
- Turbo inlet upgrades
- Intercooler and cooling system improvements
- Supporting hardware upgrades as required
All supporting modifications are assessed for compatibility before tuning.
MERCEDES-AMG GLC63 S X253/C253 GEARBOX TUNING
Gearbox tuning can improve transmission behaviour by optimising shift response, gear changes and torque management where supported by the vehicle’s transmission software.
Potential benefits include:
- Faster and sharper gear changes
- Improved shift response under acceleration
- Optimised torque management
- Enhanced performance driving characteristics
- Improved transmission response
Gearbox tuning availability depends on the transmission fitted and software compatibility.
BEFORE TUNING
Before carrying out any remapping or performance upgrades, we recommend ensuring your Mercedes-AMG is in good mechanical condition.
We recommend:
- A full diagnostic check before tuning
- Ensuring the engine is correctly serviced
- Checking spark plugs and ignition components
- Inspecting the turbocharger and boost system
- Checking for boost leaks and intake issues
- Ensuring the cooling system is operating correctly
- Addressing any existing engine or transmission faults
A healthy vehicle provides the best foundation for reliable performance tuning.
SERVICING AND MAINTENANCE FOR MERCEDES-AMG GLC63 S X253/C253
Regular maintenance is essential for keeping your GLC63 S performing at its best, particularly following a performance upgrade.
We recommend:
- Regular engine oil and filter changes
- Using manufacturer-approved quality engine oil
- Checking spark plugs and ignition coils
- Inspecting air filters and intake components
- Checking the turbocharger and boost system
- Maintaining the cooling system
- Regular transmission servicing where applicable
Correct servicing helps maintain performance, reliability and long-term engine health.
MERCEDES-AMG GLC63 S X253/C253 EXHAUST UPGRADES
An upgraded exhaust system can improve exhaust flow and enhance the sound of the AMG 4.0 V8 BiTurbo engine.
Available exhaust upgrades may include:
- Performance exhaust systems
- Sports catalytic converters, where suitable and road legal
- Exhaust system improvements
- Supporting exhaust modifications for Stage 2 tuning
The correct exhaust setup can complement ECU tuning and support the vehicle’s overall performance.
MERCEDES-AMG GLC63 S X253/C253 PERFORMANCE UPGRADES
Alongside ECU remapping, additional performance modifications can help enhance the overall driving experience.
Potential upgrades include:
- Performance air intake systems
- Turbo inlet upgrades
- Intercooler and cooling system upgrades
- Performance exhaust systems
- Improved braking components
- Suspension upgrades
- Supporting hardware for increased engine performance
The suitability of each modification depends on the vehicle’s specification and intended performance level.
STYLING AND BODY UPGRADES
Enhance the appearance of your Mercedes-AMG GLC63 S with styling upgrades designed to complement its performance-focused design.
Options may include:
- Exterior styling enhancements
- Front splitters and aerodynamic upgrades
- Rear spoilers and diffusers
- Alloy wheel upgrades
- Styling enhancements to create a more individual appearance
MERCEDES-AMG GLC63 S X253/C253 VEHICLE SECURITY
Protect your Mercedes-AMG with suitable vehicle security solutions. Modern performance vehicles can benefit from additional security measures designed to help protect against theft and unauthorised access.
Contact Onyx Performance to discuss available vehicle security upgrades.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we focus on delivering professional vehicle tuning and performance upgrades tailored to your vehicle.
Why choose us?
- Professional ECU remapping
- Performance tuning tailored to your vehicle
- Stage 1 and Stage 2 tuning options
- Supporting performance hardware upgrades
- Experienced vehicle tuning specialists
- Based in Slough, Berkshire
Our aim is to deliver meaningful performance improvements while maintaining smooth drivability and considering the condition and specification of your vehicle.
MERCEDES-AMG GLC63 S X253/C253 REMAPPING IN SLOUGH
If you are looking for Mercedes-AMG GLC63 S X253/C253 remapping in Slough, Onyx Performance can help you get more from your vehicle.
Whether you are interested in a Stage 1 ECU remap, Stage 2 performance tuning, gearbox tuning or supporting hardware upgrades, our team can discuss the options available for your AMG.
Contact Onyx Performance to arrange your tuning consultation.
FREQUENTLY ASKED QUESTIONS
How much power does the Mercedes-AMG GLC63 S X253/C253 produce as standard?
The standard 4.0 V8 BiTurbo petrol engine produces 510HP and 700Nm of torque.
How much power can the GLC63 S produce after a Stage 1 remap?
A Stage 1 remap can increase performance to up to 600HP and 800Nm.
How much power can the GLC63 S produce with Stage 2 tuning?
Stage 2 tuning can deliver up to 640HP and 850Nm with suitable supporting modifications. Please call for a Stage 2 quote.
Does the GLC63 S need hardware upgrades for Stage 1?
Stage 1 tuning is generally designed around the standard hardware, provided the vehicle is in suitable mechanical condition.
What supporting modifications may be required for Stage 2?
Depending on the vehicle and calibration, supporting modifications may include exhaust upgrades, sports catalytic converters, intake improvements, turbo inlet upgrades and cooling system improvements.
Can the gearbox be tuned?
Gearbox tuning may be available depending on the transmission and software compatibility.
Will remapping affect servicing requirements?
Regular servicing remains important. We recommend maintaining the engine oil, filters, ignition components, cooling system and other relevant components.
Which ECU does the Mercedes-AMG GLC63 S X253/C253 use?
The specified ECU for this model is Bosch MED17.7.5.
Can the GLC63 S be upgraded beyond Stage 2?
Further performance modifications may be possible depending on the vehicle’s hardware, engine condition and tuning requirements. Contact us to discuss your goals.
Does my vehicle need an ECU unlock before tuning?
ECU access requirements depend on the ECU software and vehicle specification. We can assess compatibility and confirm the required process before tuning.
BOOK YOUR MERCEDES-AMG GLC63 S X253/C253 REMAP
Ready to unlock more performance from your Mercedes-AMG GLC63 S X253/C253?
Contact Onyx Performance in Slough, Berkshire to discuss Stage 1 remapping, Stage 2 tuning, gearbox tuning and supporting performance upgrades.
Onyx Performance – Mercedes-AMG GLC63 S X253/C253 Remapping and Performance Tuning in Slough, Berkshire.
