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 A8 or S8 responds, pulls, and accelerates. This calibration is developed specifically for the D5 platform, delivering a complete transformation in drivability beyond simple horsepower gains.
Throttle response becomes immediate, torque delivery is stronger and more consistent, and the entire powerband feels sharper and more refined. From low-end acceleration to high-speed pull, every part of the rev range is optimized to keep the vehicle performing at a higher, more responsive level.
Designed for the 4.0L Twin-Turbo V8, this ECU tune enhances both performance and drivability while maintaining factory-level refinement and stability. Whether used for daily driving or high-performance applications, the result is a more aggressive and engaging driving experience.
GCA Performance securely saves your factory ECU data, allowing you to revert 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 A8 and S8 D5 platform
- Designed for 4.0L Twin-Turbo 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 boost, ignition timing, and torque calibration
- Octane-specific performance 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 D5
- Engine: 4.0L Twin-Turbo V8
- Tuning Stages: Stage 1 & Stage 2 Available
- Reversible: Yes (stock file saved)
- Installation Method: Remote flashing via cable
- Warranty: 1-Year Warranty
Fitment
- Audi A8 60 TFSI D5 (2019-2025)
- Audi S8 D5 (2019-2025)
Tuning Gains
- Up to +75 Horsepower
- Up to +75 lb-ft Torque
Actual gains may vary depending on fuel quality, vehicle condition, and supporting modifications.
Tuning Process
- Place your order
- Receive instructions via email
- Connect supplied cable to vehicle
- Read factory ECU file
- Receive tuned calibration
- Flash and enjoy upgraded performance
