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 2014-2020 Mercedes-Benz SL400 or SL450 with the German Car Accessories Performance ECU Tune. Developed by German Car Accessories (GCA) under our GCA Performance line, this precision ECU calibration is specifically engineered for the 3.0L Twin Turbo M276 V6, delivering substantial gains in horsepower, torque, throttle response, and overall drivability.
Engineered with a performance-first philosophy, this ECU tune transforms the way your R231 SL accelerates and responds. Throttle input becomes sharper, turbo response is significantly improved, and torque delivery is stronger throughout the entire RPM range. Whether you're cruising with the top down or enjoying spirited driving, this calibration delivers smoother power delivery, stronger mid-range acceleration, and a more engaging driving experience.
Every GCA Performance ECU Tune is custom-calibrated to your vehicle and fuel quality, ensuring maximum performance while maintaining factory reliability. Both Stage 1 and Stage 2 calibrations are available. Stage 1 is designed for vehicles equipped with factory downpipes, while Stage 2 is optimized for vehicles fitted with GCA Performance Downpipes. There is no additional charge for Stage 2 tuning.
Additional tuning features include factory speed limiter removal, configurable cold start operation, adjustable exhaust burble settings, and check engine light suppression for compatible off-road downpipe applications. Before tuning begins, your factory ECU software is securely backed up, allowing your vehicle to be returned to stock settings whenever desired.
Following your purchase, German Car Accessories provides the required programming cable along with comprehensive flashing instructions, allowing you to safely tune your ECU from home.
Every GCA Performance ECU Tune is backed by a 1-Year Warranty.
Fitment
Fits:
- 2014-2020 Mercedes-Benz SL400
- 2014-2020 Mercedes-Benz SL450
- R231 Chassis
- 3.0L Twin Turbo V6 M276 Engine
Performance Gains
- Up to 75 HP Increase
- Up to 75 lb-ft Torque Increase
Features
- Designed by German Car Accessories (GCA)
- GCA Performance ECU Calibration
- Stage 1 Tuning Available
- Stage 2 Tuning Available (GCA Performance Downpipes)
- No Additional Charge for Stage 2 Calibration
- Faster Throttle Response
- Improved Turbo Response
- Increased Horsepower and Torque
- Optimized Powerband Performance
- Octane-Specific ECU Calibration
- Factory Speed Limiter Removal
- Adjustable or Extended Exhaust Burble
- Configurable Cold Start Function (On/Off)
- Downpipe Check Engine Light Suppression (Off-Road Use Only)
- Factory ECU File Securely Backed Up
- 100% Reversible to Factory Software
- Programming Cable Included
- Detailed Installation Instructions Provided After Purchase
- Backed by a 1-Year Warranty
Specifications
- Brand: German Car Accessories
- Product: Performance ECU Tune
- Vehicle: Mercedes-Benz SL400 / SL450
- Chassis: R231
- Engine: 3.0L Twin Turbo V6 M276
- Tuning Stages: Stage 1 / Stage 2
- Installation Method: ECU Flash via Included Programming Cable
