Description
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Unlock the full performance potential of your Audi RS4 or RS5 with the German Car Accessories GCA Performance ECU Tune designed for the B9 and B9.5 platforms. Engineered with a performance-first calibration strategy, this ECU tune transforms throttle response, torque delivery, and overall drivability for a sharper, more aggressive, and more responsive driving experience.
Optimized for the 2.9L V6 twin-turbo TFSI engine, this tuning solution delivers improved horsepower and torque while enhancing mid-range acceleration and top-end performance. The result is a more dynamic and performance-focused driving experience that retains OEM-level refinement and everyday usability.
GCA Performance ECU tuning securely stores your factory ECU data, allowing the vehicle to be fully reverted back to stock settings at any time. This ensures flexibility for servicing, resale, or personal preference adjustments.
Specifically developed for 2018+ Audi RS4 and RS5 B9/B9.5 models, this tune supports both Stage 1 and Stage 2 configurations depending on supporting hardware. Designed for consistent power delivery, optimized response, and improved overall drivability.
German Car Accessories backs all tuning products with a 1-Year Warranty and provides full installation instructions after purchase.
Key Features
- Genuine German Car Accessories GCA Performance ECU Tune
- Designed for Audi RS4/RS5 B9 & B9.5 (2018+)
- Optimized for 2.9L V6 twin-turbo TFSI engine
- Improved horsepower and torque output
- Sharper throttle response and drivability
- Stronger mid-range and top-end performance
- Octane-specific calibration
- Factory speed governor removal for unrestricted performance
- Enhanced exhaust acoustics with optional burble tuning
- Adjustable cold start behavior (On/Off)
- Downpipe-ready calibration (off-road use only)
- Stage 1 and Stage 2 tuning options available
- Fully reversible back to stock ECU settings
- 1-Year Warranty included
Specifications
- Brand: German Car Accessories
- Product Type: ECU Performance Tune
- Platform: B9 / B9.5
- Engine: 2.9L V6 Twin Turbo TFSI
- Installation Method: ECU Flash / Remote Programming
- Reversible: Yes (Stock file restore supported)
- Warranty: 1-Year Warranty
Fitment
- Audi RS4 B9 (2018–2025) 2.9T
- Audi RS5 B9 Coupe (2018–2025) 2.9T
- Audi RS5 Sportback B9.5 (2019–2025) 2.9T
