Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Engineered with a performance-first mindset, GCA Performance ECU tuning redefines how your Audi S5 responds, pulls, and accelerates. This calibration is designed specifically for the B8 Audi S5 Coupe equipped with the 4.2L V8 engine, delivering a complete transformation in drivability rather than just an increase in power.
Throttle response becomes immediate, torque delivery is stronger and more consistent, and the entire powerband feels sharper and more engaging. From mid-range acceleration to high-RPM pull, every part of the rev range is optimized to keep the vehicle performing at a higher level with improved responsiveness and efficiency.
GCA Performance securely saves your factory ECU data, allowing you to return your vehicle back to stock settings at any time.
We Stand Behind Our Products
All items from us come with a 1-Year Warranty.
Key Features
- GCA Performance ECU Tune for Audi S5 B8 Coupe
- Designed specifically for the 4.2L V8 engine
- Noticeable improvement in throttle response and acceleration
- Increased horsepower and torque output
- Stronger mid-range and top-end power delivery
- Stage 1 and Stage 2 tuning available
- Optimized ignition timing, fueling, and torque mapping
- Factory speed governor removal
- Adjustable exhaust burble functionality
- Cold start behavior configurable (On/Off)
- Downpipe readiness with check engine light suppression (off-road use only)
- Fully reversible with stock ECU backup saved
- 1-Year Warranty included
Specifications
- Brand: German Car Accessories (GCA Performance)
- Product Type: ECU Tune / Engine Software
- Platform: Audi B8
- Engine: 4.2L Naturally Aspirated V8
- Vehicle Type: Audi S5 Coupe
- Tuning Stages: Stage 1 & Stage 2 Available
- Reversible: Yes (stock file saved)
- Installation Method: ECU must be removed and shipped in
- Warranty: 1-Year Warranty
Fitment
- Audi S5 Coupe B8 (2008-2012) 4.2L V8
Tuning Gains
- Up to +50 Horsepower
- Up to +50 lb-ft Torque
Actual gains may vary depending on fuel quality, vehicle condition, and supporting modifications.
Tuning Process
- Place your order
- Remove ECU from vehicle
- Ship ECU to us
- We perform tuning calibration
- ECU is returned ready to install
- Enjoy improved performance
