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+ Mercedes-Benz GLA45 AMG / GLA45 S AMG H247 with the GCA Performance ECU Tune. Engineered with a performance-first approach, this custom ECU calibration transforms the way your vehicle responds, accelerates, and delivers power.
Designed specifically for the 2.0L Turbo M139 engine, the GCA Performance tune optimizes throttle response, torque delivery, and overall powerband performance. Experience sharper acceleration, stronger mid-range pull, and improved top-end power while maintaining smooth and reliable daily drivability.
This is more than just a horsepower upgrade — it is a complete improvement in driving dynamics. Every part of the RPM range is optimized to provide faster response, improved efficiency, and a more engaging AMG driving experience.
GCA Performance securely saves your original ECU data, allowing your vehicle to be returned to factory settings at any time. With support for both Stage 1 and Stage 2 tuning, you can choose the calibration that matches your vehicle setup, whether running factory downpipes or upgrading with GCA Performance Downpipes.
Features & Benefits
- Designed by German Car Accessories under the GCA Performance line
- Custom ECU tuning for Mercedes-AMG H247 GLA45 models
- Optimized throttle response and power delivery
- Increased horsepower and torque output
- Improved turbocharger performance and efficiency
- Octane-specific calibration based on fuel quality
- Factory speed limiter removal
- Adjustable exhaust burble settings
- Configurable cold start behavior (On/Off)
- Downpipe readiness with check engine light suppression (for off-road use only)
- Stage 1 and Stage 2 tuning available
- Original ECU data securely saved
- 100% reversible back to factory settings
- Remote tuning through provided cable
- Backed by a 1-Year Warranty
Tuning Specs
- Fits: 2020 2021 2022 2023 2024 2025 2026 H247 Mercedes-Benz GLA45 AMG / GLA45 S AMG
- Engine: 2.0L Turbo M139 Engine
- Stage 1: Designed for vehicles with factory downpipes
- Stage 2: Designed for vehicles equipped with GCA Performance Downpipes
- Horsepower Gain: Up to +70 HP
- Torque Gain: Up to +70 TQ
Important Tuning Notes
- The factory ECU includes horsepower and torque limiters. A CPC module is recommended to maximize performance gains.
- Without a CPC module, expected gains are approximately +40 HP and +40 TQ.
- Vehicles with build dates after June 2020 (6/2020+) may have a factory-locked ECU. An ECU unlock must be completed before tuning can be performed.
- Stage selection will be confirmed through the tuning instructions after purchase.
- Stage 2 tuning does not require an additional tuning fee.
Tuning Instructions
- After purchase, tuning instructions will be emailed to you.
- The vehicle can be tuned remotely using the provided cable.
- Follow the included instructions to complete the ECU calibration process.
