Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.

Unlock the performance potential of your 2024+ Mercedes-Benz E-Class E200, E300, or E350 with the GCA Performance ECU Tune. Engineered with a performance-first mindset, this custom ECU calibration enhances throttle response, acceleration, and overall driving dynamics while optimizing the factory 2.0L turbocharged engine.

Developed by German Car Accessories (GCA) under our GCA Performance lineup, this ECU tune improves torque delivery, sharpens throttle input, and refines the entire powerband for a smoother and more responsive driving experience. From everyday commuting to spirited driving, your W214 E-Class gains improved performance and a more engaging feel behind the wheel.

GCA Performance securely saves your factory ECU data, allowing you to restore the vehicle back to its original factory calibration at any time.

We Stand Behind Our Products

• All GCA Performance products include a 1-Year Warranty.

Fitment

Fits:

• 2024 Mercedes-Benz E200
• 2025 Mercedes-Benz E200
• 2026 Mercedes-Benz E200
• 2024 Mercedes-Benz E300
• 2025 Mercedes-Benz E300
• 2026 Mercedes-Benz E300
• 2024 Mercedes-Benz E350
• 2025 Mercedes-Benz E350
• 2026 Mercedes-Benz E350

Chassis:

• W214 Sedan

Engine:

• 2.0L Turbocharged M254 Engine

Key Features

• GCA Performance custom ECU calibration
• Increased horsepower and torque output
• Improved throttle response and acceleration
• Optimized torque delivery across the RPM range
• Enhanced engine responsiveness and drivability
• Adjustable exhaust acoustics with extended burble settings
• Factory speed limiter removal
• Octane-specific calibration based on fuel quality
• Adjustable cold start behavior (On/Off)
• Fully reversible ECU programming
• Stage 1 and Stage 2 tuning options available

Tuning Specifications

• Engine: 2.0L Turbocharged M254
• Horsepower Gain: +60 HP
• Torque Gain: +60 TQ

Available Tuning Options:

Stage 1

• Designed for vehicles with factory downpipes

Stage 2

• Designed for vehicles equipped with GCA Performance downpipes

Stage 2 calibration is available at no additional cost. Final tuning requirements will be confirmed after purchase.

ECU Unlock Information

• The factory ECU on the W214 Mercedes-Benz E-Class comes locked.
• If an ECU unlock is not purchased, the customer must arrange ECU unlocking before tuning can be completed.

Tuning Instructions

• After purchase, tuning instructions will be emailed to you.
• ECU removal and shipment to GCA Performance will be required for calibration.
• Professional installation is always recommended.

Important Disclaimer

Removing, disabling, or modifying emissions-related equipment on pollution-controlled vehicles may be illegal. This product is intended only for racing, competition, track, hobby, or off-road use.

Installation and usage of aftermarket software may affect drivability, reliability, emissions compliance, insurance coverage, and factory warranty. All installation and usage risks are the responsibility of the end user and installer.