Performance Stage 1 ECU Software Precisely Engineered for your D5 S8 with the 4.0 EA825 engine. This vehicle has added support through UniCONNECT+ which allows you to program your own vehicle right in your own garage.
Unitronic software is flashed directly through the (OBDII) diagnostic port of your vehicle (10-15 minutes).
Features:
- Stage 1 gains over stock: +137HP / +104TQ (91 Octane Fuel)
- Stage 1 gains over stock: +190HP / +119TQ (93 Octane Fuel)
- Engineered with Strict Industry Standards
- Extensively Tested Under Various Driving Conditions
- Factory Safety Limiters Retained
- Optimized Responsiveness and Drivability
- Optimized Smoothness and Driving Comfort
- Power Delivery Perfectly Optimized Throughout the Power Band
- Improved Fuel Efficiency
- Speed Governor Removed
- Hardware Requirements: None
- An upgraded intake is recommended to achieve the advertised power figures. 728HP/699LB-FT max w/ Stock Intake
What’s Included:
- Unitronic Stage 1 or 1+ ECU Tune
- Unitronic UniCONNECT+ Cable (OPTIONAL)