Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Unlock the full potential of your Audi S4 or S5 with the German Car Accessories Performance ECU Tune for the B9 and B9.5 platforms. Designed specifically for the 3.0L Turbocharged V6 engine, this advanced ECU calibration delivers significant gains in horsepower, torque, throttle response, and overall driving performance.
Developed with a performance-first philosophy, GCA Performance ECU tuning optimizes boost control, ignition timing, fueling strategies, and torque management to create a more responsive and exhilarating driving experience. Acceleration becomes sharper, throttle response is more immediate, and power delivery remains strong and consistent throughout the entire RPM range.
Whether you're looking for improved daily drivability or enhanced performance during spirited driving, this tune transforms the character of your S4 or S5 while maintaining smooth operation and reliability.
Each calibration is tailored to your specific fuel quality with octane-specific tuning options to maximize performance. Additional tuning features include speed governor removal, configurable cold-start settings, enhanced exhaust acoustics with adjustable burble functionality, and downpipe compatibility with check engine light suppression for off-road use only.
Available in both Stage 1 and Stage 2 configurations, this ECU tune can be customized to match your vehicle's hardware setup. Stage 1 is designed for factory downpipes, while Stage 2 is optimized for vehicles equipped with GCA Performance Downpipes. There is no additional charge for Stage 2 tuning.
For complete peace of mind, GCA Performance securely saves your original ECU file, allowing the vehicle to be returned to stock calibration at any time. Installation is performed remotely using the included tuning cable, with detailed instructions provided after purchase.
All German Car Accessories tuning products are backed by a 1-Year Limited Warranty.
Key Features
- GCA Performance ECU Tune for Audi S4 and S5 B9/B9.5
- Designed for the 3.0L Turbocharged V6 engine
- Improved throttle response and acceleration
- Increased horsepower and torque output
- Enhanced mid-range and top-end power delivery
- Optimized boost, fueling, and ignition mapping
- Stage 1 and Stage 2 tuning available
- No additional charge for Stage 2 calibration
- Octane-specific performance tuning
- Factory speed limiter removal
- Adjustable exhaust burble functionality
- Configurable cold-start settings
- Downpipe-ready calibration with CEL suppression for off-road use
- Factory ECU file securely backed up
- Fully reversible to stock at any time
- Remote flashing via included tuning cable
- Backed by a 1-Year Limited Warranty
Tuning Gains
- Up to 60 Horsepower Increase
- Up to 60 lb-ft Torque Increase
Actual gains may vary depending on fuel quality, vehicle condition, supporting modifications, and environmental factors.
Specifications
- Brand: German Car Accessories
- Product Type: ECU Tune
- Platform: Audi B9 / B9.5
- Engine: 3.0L Turbocharged V6
- Tuning Stages: Stage 1 & Stage 2 Available
- Reversible: Yes
- Flashing Method: Remote Flashing
- Cable Included: Yes
- Warranty: 1-Year Limited Warranty
Fitment
Audi S4
- 2017 Audi S4 (B9)
- 2018 Audi S4 (B9)
- 2019 Audi S4 (B9)
- 2020 Audi S4 (B9)
- 2021 Audi S4 (B9.5)
- 2022 Audi S4 (B9.5)
- 2023 Audi S4 (B9.5)
- 2024 Audi S4 (B9.5)
- 2025 Audi S4 (B9.5)
Audi S5
- 2017 Audi S5 (B9)
- 2018 Audi S5 (B9)
- 2019 Audi S5 (B9)
- 2020 Audi S5 (B9)
- 2021 Audi S5 (B9.5)
- 2022 Audi S5 (B9.5)
- 2023 Audi S5 (B9.5)
- 2024 Audi S5 (B9.5)
- 2025 Audi S5 (B9.5)
Tuning Process
- Complete your purchase.
- Detailed tuning instructions will be emailed to you.
- Connect the supplied tuning cable to your vehicle.
- Read and upload your factory ECU file.
- Receive your custom calibration from GCA Performance.
- Flash the tune and enjoy the performance gains.
