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 2016-2022 Mercedes-Benz GLC200, GLC250, or GLC300 with the GCA Performance ECU Tune, specifically engineered for the X253 platform equipped with the 2.0L Turbocharged M274 engine. Designed to deliver significantly improved power, throttle response, and drivability, this ECU calibration transforms the way your GLC accelerates while maintaining excellent everyday reliability.
Developed by German Car Accessories under our GCA Performance lineup, this tune optimizes boost pressure, ignition timing, throttle mapping, and fueling to deliver stronger performance across the entire RPM range. Whether your vehicle is completely stock or equipped with GCA Performance Downpipes, our Stage 1 and Stage 2 calibrations are engineered to maximize results without compromising drivability.
Every tune includes a secure backup of your factory ECU software, allowing your vehicle to be restored to its original settings at any time.
We Stand Behind Our Products
- All GCA Performance products are backed by a 1-Year Warranty.
Features
- Up to 60 HP and 60 LB-FT of additional performance
- Sharper throttle response and stronger mid-range acceleration
- Optimized ignition timing, boost control, and fueling
- Stage 1 and Stage 2 tuning included at no additional cost
- Downpipe readiness with check engine light suppression (off-road use only)
- Adjustable or extended exhaust burble options
- Factory speed limiter removal
- Octane-specific calibrations based on your local fuel
- Configurable cold start behavior (On/Off)
- Factory ECU file securely backed up
- 100% reversible to stock at any time
Tuning Specifications
- Fits: 2016-2022 Mercedes-Benz GLC200, GLC250 & GLC300
- Platform: X253
- Engine: 2.0L Turbocharged Inline-4 M274
- Stage 1: Factory Downpipes
- Stage 2: GCA Performance Downpipes
- Installation Method: ECU flashing via supplied tuning cable
- Warranty: 1-Year GCA Performance Warranty
Performance Gains
- Maximum Gain: Up to +60 HP
- Maximum Gain: Up to +60 LB-FT
Important Notes
- 2019-2022 models: Mercedes equipped these vehicles with a factory CPC (Torque & Horsepower Limiter). Installing a CPC module is recommended to achieve the full advertised gains. Without a CPC module, typical gains are approximately +40 HP and +40 LB-FT.
- Vehicles built after June 2020 (06/2020+): The factory ECU is locked and must be unlocked before tuning. Customers who do not purchase an ECU unlock through GCA Performance will need to arrange for the unlock before the ECU can be tuned.
Tuning Instructions
- After purchase, detailed tuning instructions will be emailed to you.
- A tuning cable will be provided, allowing you to read and flash your ECU from home.
- We will verify whether your vehicle requires Stage 1 or Stage 2 tuning before creating your calibration.
Vehicle Fitment
- 2016 Mercedes-Benz GLC200 (X253)
- 2017 Mercedes-Benz GLC200 (X253)
- 2018 Mercedes-Benz GLC200 (X253)
- 2019 Mercedes-Benz GLC200 (X253)
- 2020 Mercedes-Benz GLC200 (X253)
- 2021 Mercedes-Benz GLC200 (X253)
- 2022 Mercedes-Benz GLC200 (X253)
- 2016 Mercedes-Benz GLC250 (X253)
- 2017 Mercedes-Benz GLC250 (X253)
- 2018 Mercedes-Benz GLC250 (X253)
- 2019 Mercedes-Benz GLC250 (X253)
- 2020 Mercedes-Benz GLC250 (X253)
- 2021 Mercedes-Benz GLC250 (X253)
- 2022 Mercedes-Benz GLC250 (X253)
- 2016 Mercedes-Benz GLC300 (X253)
- 2017 Mercedes-Benz GLC300 (X253)
- 2018 Mercedes-Benz GLC300 (X253)
- 2019 Mercedes-Benz GLC300 (X253)
- 2020 Mercedes-Benz GLC300 (X253)
- 2021 Mercedes-Benz GLC300 (X253)
- 2022 Mercedes-Benz GLC300 (X253)
Note: Designed exclusively for 2016-2022 Mercedes-Benz GLC200, GLC250, and GLC300 X253 models equipped with the 2.0L Turbocharged M274 engine. Stage 1 and Stage 2 calibrations are included at no additional cost. Vehicles built after June 2020 require an ECU unlock before tuning, and 2019-2022 models benefit from a CPC module to achieve maximum advertised performance gains.
