Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Unlock the full performance potential of your 2020-2025 Mercedes-Benz CLA45 AMG or CLA45 S AMG with the German Car Accessories (GCA Performance) ECU Tune. Engineered with a performance-first mindset, this ECU calibration dramatically improves throttle response, torque delivery, acceleration, and overall drivability for a sharper and more responsive driving experience.
Rather than simply adding horsepower, GCA Performance ECU tuning optimizes the entire powerband of the M139 2.0L Turbocharged engine, delivering stronger mid-range acceleration, improved top-end power, and smoother, more consistent performance throughout the RPM range.
Before tuning, GCA Performance securely saves your factory ECU data, allowing your vehicle to be restored to its original factory calibration at any time.
Fitment
Compatible with:
- 2020-2025 Mercedes-Benz CLA45 AMG (W118/C118)
- 2020-2025 Mercedes-Benz CLA45 S AMG (W118/C118)
- Engine: 2.0L Turbocharged Inline-4 M139
Tuning Specifications
- Stage 1 tuning available for vehicles with factory downpipes
- Stage 2 tuning available for vehicles equipped with GCA Performance downpipes
- Stage selection will be confirmed after purchase through the tuning instructions
- No additional charge for Stage 2 tuning
- Downpipe readiness with check engine light suppression (for off-road use only)
- Enhanced exhaust acoustics with extended or adjustable burble settings
- Factory speed governor removal for unrestricted performance
- Octane-specific calibration tailored to your fuel quality
- Fully configurable cold start behavior (On/Off)
- 100% reversible tuning with the ability to restore the factory ECU calibration at any time
- Factory ECU data securely backed up before tuning
Performance Gains
- Horsepower Gain: Up to +70 HP
- Torque Gain: Up to +70 TQ
CPC Module Recommendation
- The CLA45 AMG and CLA45 S AMG are equipped with factory torque and horsepower limiters.
- GCA Performance recommends installing a CPC module to achieve maximum tuning gains.
- Without a CPC module, vehicles can still achieve approximately +40 HP and +40 TQ.
ECU Unlock Information
- Vehicles with a build date after June 2020 (06/2020+) feature a factory-locked ECU.
- If an ECU unlock is not purchased with your order, the ECU must be unlocked separately before tuning can be completed.
- If you purchase the ECU unlock option, GCA Performance will provide complete instructions.
Tuning Instructions
- Detailed tuning instructions will be emailed after purchase.
- Remote ECU tuning is performed using the supplied tuning cable.
- The required tuning cable is included with your purchase.
Warranty
- All German Car Accessories products are backed by a 1-Year Warranty.
