Audi S4 B8.5 Remapping and Tuning
Upgrade your Audi S4 B8.5 3.0 TFSI Supercharged 333HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire.
Produced between 2012 and 2016, the Audi S4 B8.5 features a supercharged 3.0-litre TFSI V6 petrol engine. Professional ECU calibration can increase horsepower and torque, improve throttle response and deliver stronger acceleration while retaining everyday drivability when the vehicle is in good mechanical condition.
Audi S4 B8.5 Performance Figures
- Engine: 3.0 TFSI Supercharged
- Fuel Type: Petrol
- Standard Power: 333HP
- Standard Torque: 440Nm
- Stage 1 Power: 410HP
- Stage 1 Torque: 500Nm
- Stage 2 Power: 470HP
- Stage 2 Torque: 560Nm
- ECU: Continental SIMOS 8.4 / 8.5
Stage 1 Remap – Audi S4 B8.5
Our Stage 1 ECU remap is designed to improve performance through revised engine software, generally without requiring major engine hardware changes, provided the vehicle is suitable for tuning.
Performance figures:
- Standard power: 333HP
- Tuned power: 410HP
- Standard torque: 440Nm
- Tuned torque: 500Nm
A Stage 1 remap can improve throttle response, mid-range torque and acceleration, giving your Audi S4 a more responsive driving experience.
Stage 2 Remap – Audi S4 B8.5
For drivers seeking further performance, Stage 2 tuning offers a more advanced calibration when suitable supporting hardware is installed.
Target performance figures:
- Tuned power: 470HP
- Tuned torque: 560Nm
Supporting modifications may be required depending on the selected calibration and vehicle specification. Contact Onyx Performance for a tailored Stage 2 quote and confirmation of the recommended hardware.
Gearbox Tuning
Gearbox tuning can complement engine remapping by refining shift behaviour and transmission response where supported by the fitted gearbox and software.
Available options:
- Stage 1 Gearbox Remap – Contact for Price
- Stage 2 Gearbox Remap – Contact for Price
- Stage 3 Gearbox Remap – Contact for Price
Contact us to confirm gearbox tuning compatibility for your Audi S4 B8.5.
BEFORE TUNING
Before remapping, we recommend checking the vehicle’s service history, engine oil, spark plugs, ignition coils, cooling system, supercharger system and diagnostic fault codes. The engine and transmission should be in good mechanical condition before performance software is installed.
SERVICING AND MAINTENANCE
Regular maintenance is important for a tuned performance vehicle. Follow an appropriate servicing schedule, use suitable fluids and quality replacement parts, and address any mechanical issues before tuning. Additional checks may be advisable depending on mileage and driving style.
EXHAUST UPGRADES
Suitable exhaust upgrades may complement a Stage 2 setup, depending on the chosen calibration. Exhaust modifications should comply with applicable noise and emissions regulations. Contact us to discuss compatibility before purchasing parts.
PERFORMANCE UPGRADES
Supporting modifications may include intake improvements, supercharger-related upgrades, cooling improvements and suitable exhaust components, depending on your performance goals. We can discuss an appropriate setup based on the vehicle’s condition and intended use.
STYLING AND BODY UPGRADES
Personalise your Audi S4 with styling and body upgrades that suit its sporty character. Ensure all modifications are properly fitted and suitable for road use.
VEHICLE SECURITY
Protect your performance vehicle with sensible security measures. Keep keys secure, consider suitable anti-theft protection and ensure any security upgrades are compatible with the vehicle’s systems.
WHY CHOOSE ONYX PERFORMANCE?
Onyx Performance provides professional ECU remapping and performance tuning in Slough, Berkshire. We focus on vehicle-specific calibration, clear performance targets and advice on suitable supporting modifications.
REMAPPING IN SLOUGH
Looking for an Audi S4 B8.5 remap in Slough or the surrounding Berkshire area? Contact Onyx Performance to discuss Stage 1 tuning, Stage 2 options and gearbox remapping for your vehicle.
Frequently Asked Questions
How much power can an Audi S4 B8.5 make with a Stage 1 remap?
The supplied figures indicate an increase from 333HP and 440Nm to approximately 410HP and 500Nm. Actual results may vary depending on vehicle condition, fuel quality and calibration.
How much power can an Audi S4 B8.5 make with Stage 2 tuning?
The supplied Stage 2 figures are 470HP and 560Nm. Supporting hardware and vehicle condition should be assessed before confirming suitability.
Are hardware upgrades required for Stage 2?
Stage 2 may require supporting modifications depending on the chosen calibration. Contact us to confirm which hardware is appropriate for your vehicle.
Can the gearbox be remapped as well?
Gearbox tuning may be available depending on the fitted transmission and software version. Contact Onyx Performance for compatibility and pricing.
Can I book a dyno session?
Dyno sessions are available for £120.00. Contact us to arrange a session and confirm suitable testing for your vehicle.
Is Stage 3 tuning available?
More extensive performance packages depend on the vehicle, supporting hardware and desired power target. Contact us to discuss a bespoke setup.
Does the ECU need unlocking?
Requirements depend on the ECU software version and vehicle configuration. We can check compatibility and advise whether an unlock or additional procedure is necessary.
BOOK YOUR REMAP
Ready to upgrade your Audi S4 B8.5? Contact Onyx Performance in Slough, Berkshire to discuss your requirements, confirm vehicle compatibility and arrange your remapping appointment.
Onyx Performance – Professional ECU Remapping and Performance Tuning
📞 Call us now on 01753 439321 to book your tuning service or discuss Stage 2 and security options!



