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 GLS580 with the GCA Performance ECU Tune. Designed by German Car Accessories (GCA) under our performance division, this custom ECU calibration enhances the way your GLS580 delivers power, responds to throttle input, and accelerates.
Engineered specifically for the 4.0L Twin-Turbo V8 M176 engine, this tune optimizes engine parameters to provide sharper throttle response, stronger torque delivery, and improved overall drivability. From daily commuting to spirited acceleration, the optimized calibration allows your GLS580 to deliver a more powerful and engaging driving experience throughout the RPM range.
GCA Performance securely saves your factory ECU data, allowing you to restore your vehicle back to the original factory settings at any time. Each calibration is tailored to your vehicle configuration and fuel quality to maximize performance while maintaining smooth operation.
For vehicles equipped with upgraded downpipes, Stage 2 tuning is available with GCA Performance Downpipes. Stage 2 calibration is included at no additional charge. Downpipe readiness and check engine light suppression are available for off-road applications only.
The GLS580 ECU comes locked from the factory and requires an ECU unlock before tuning can be completed. The ECU will need to be removed and shipped to GCA Performance for calibration.
We Stand Behind Our Products
- All GCA Performance ECU Tunes include a 1-Year Warranty.
Features
- Custom GCA Performance ECU calibration
- Designed specifically for Mercedes-Benz GLS580 models
- Optimized for the 4.0L Twin-Turbo V8 M176 engine
- Improved throttle response
- Increased horsepower and torque output
- Enhanced turbocharger performance
- Stronger acceleration and mid-range power
- Optimized power delivery throughout the RPM range
- Factory speed limiter removal
- Octane-specific calibration based on fuel quality
- Adjustable exhaust burble settings
- Configurable cold start behavior (On/Off)
- Downpipe readiness with CEL suppression (off-road use only)
- Stage 1 and Stage 2 tuning available
- Factory ECU data backup and restoration capability
- 100% reversible back to stock
Vehicle Fitment
Fits:
- 2020 Mercedes-Benz GLS580
- 2021 Mercedes-Benz GLS580
- 2022 Mercedes-Benz GLS580
- 2023 Mercedes-Benz GLS580
- 2024 Mercedes-Benz GLS580
- 2025 Mercedes-Benz GLS580
- 2026 Mercedes-Benz GLS580
Chassis:
- X167 / W167
Engine:
- 4.0L Twin-Turbo V8 M176 Engine
Performance Gains
Stage 1 / Stage 2 Gains
- Horsepower Gain: +60 HP
- Torque Gain: +60 LB-FT
Important ECU Unlock Information
- The Mercedes-Benz GLS580 ECU comes locked from the factory.
- An ECU unlock is required before tuning can be performed.
- Customers who do not purchase the ECU unlock must arrange their own unlocking service before tuning.
- ECU removal and shipping to GCA Performance is required for calibration.
Tuning Process
- Purchase your GCA Performance ECU Tune.
- Receive tuning instructions via email.
- Remove your ECU and ship it to GCA Performance.
- GCA Performance unlocks and calibrates your ECU software.
- Receive your tuned ECU back and reinstall it.
- Enjoy improved performance and responsiveness.
Specifications
- Brand: German Car Accessories (GCA)
- Product: Performance ECU Tune
- Vehicle: Mercedes-Benz GLS580
- Years: 2020-2026
- Chassis: X167 / W167
- Engine: 4.0L Twin-Turbo V8 M176
- Tuning Options: Stage 1 / Stage 2
- Installation: ECU Flash Calibration
- ECU Unlock Required: Yes
- Warranty: 1 Year
