Audi S8 Plus D4 Remapping and Tuning
Upgrade your Audi S8 Plus D4 4.0 TFSI V8 605HP with professional Stage 1 and Stage 2 tuning from Onyx Performance in Slough, Berkshire. Our ECU remapping services are designed to improve power delivery, torque and throttle response while retaining the refined driving character of Audi’s high-performance luxury saloon.
Audi S8 Plus D4 — Engine and Performance
The Audi S8 Plus D4 is powered by a 4.0-litre TFSI twin-turbocharged V8 petrol engine, producing 605HP and 700Nm of torque as supplied in your vehicle data. Professional ECU calibration can enhance acceleration and mid-range response while maintaining smooth performance for everyday driving.
Stage 1 ECU Remap — 720HP / 1,000Nm
Stage 1 tuning is designed for vehicles with standard hardware that are in good mechanical condition.
- Standard power: 605HP
- Standard torque: 700Nm
- Stage 1 power target: 720HP
- Stage 1 torque target: 1,000Nm
A Stage 1 remap optimises engine calibration to improve power delivery and throttle response. Actual results depend on vehicle condition, fuel quality and the calibration used.
Stage 2 ECU Remap — 780HP / 1,100Nm
For drivers seeking additional performance, Stage 2 tuning has a supplied target of 780HP and 1,100Nm.
Stage 2 may require suitable supporting hardware, depending on the existing vehicle setup and calibration. Contact Onyx Performance for a quote and confirmation of the required modifications before proceeding.
All performance figures are indicative targets, not guaranteed results. The final output depends on the vehicle’s condition, hardware, fuel and calibration.
Gearbox Tuning
Gearbox tuning may complement engine remapping by optimising shift behaviour and torque management, subject to compatibility with the installed transmission and control unit.
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 and pricing for your Audi S8 Plus.
BEFORE TUNING
Before remapping, we recommend checking the vehicle’s mechanical condition and scanning for fault codes. The engine, turbochargers, ignition system, cooling system and transmission should be in good working order before increasing performance.
SERVICING AND MAINTENANCE
Regular servicing is important for a tuned performance vehicle. Keep engine oil, filters, spark plugs and other service items maintained according to the manufacturer’s recommendations. Resolve existing faults before tuning.
EXHAUST UPGRADES
An appropriate exhaust upgrade can complement a performance setup. Any modifications should be compatible with the engine calibration and comply with applicable emissions and road-use requirements.
PERFORMANCE UPGRADES
Depending on your performance goals, supporting upgrades may include suitable intake, intercooling, exhaust or other hardware modifications. We can discuss your existing setup and advise on the requirements for your intended tuning stage.
STYLING AND BODY UPGRADES
Enhance your Audi S8 Plus with styling upgrades that complement its understated performance-saloon design. Choose quality components with appropriate fitment and everyday usability.
VEHICLE SECURITY
Protect your Audi S8 Plus with appropriate vehicle-security measures. Contact us to discuss available options and compatibility with your vehicle.
WHY CHOOSE ONYX PERFORMANCE
Onyx Performance provides vehicle-specific remapping and performance advice in Slough, Berkshire. We help you understand available tuning stages, expected performance targets and any supporting modifications that may be required.
REMAPPING IN SLOUGH
Looking for Audi S8 Plus remapping in Slough? Onyx Performance offers ECU remapping and performance tuning for Audi owners in Slough, Berkshire, and surrounding areas. Contact us to discuss your S8 Plus D4 and arrange an appointment.
Frequently Asked Questions
How much power can an Audi S8 Plus D4 make with Stage 1 tuning?
The supplied Stage 1 target is 720HP and 1,000Nm, compared with the supplied standard figures of 605HP and 700Nm.
What is the Stage 2 power target?
The supplied Stage 2 target is 780HP and 1,100Nm. Supporting hardware requirements should be confirmed for your vehicle before tuning.
Are hardware upgrades required for Stage 2?
Stage 2 commonly requires supporting modifications. The exact requirements depend on the vehicle’s current configuration and the calibration selected.
Can the gearbox be remapped too?
Gearbox tuning options depend on the installed transmission and control-unit compatibility. Contact us to discuss availability and pricing.
Can I book a dyno session?
Dyno sessions are available for £120.00. Contact Onyx Performance to confirm availability and arrange a session.
Is Stage 3 tuning available for the Audi S8 Plus?
Stage 3 availability depends on the engine setup, supporting hardware and calibration requirements. Contact us to discuss your performance goals and obtain advice on feasibility and pricing.
Does the ECU or TCU need unlocking?
Requirements depend on the installed ECU or transmission control unit, software version and tuning method. The ECU identification for this listing is still to be verified, so compatibility should be confirmed before booking.
BOOK YOUR REMAP
Ready to enhance your Audi S8 Plus D4? Contact Onyx Performance in Slough, Berkshire, to discuss Stage 1 or Stage 2 tuning, supporting modifications and appointment availability.
Onyx Performance — professional remapping and tuning in Slough.
📞 Call us now on 01753 439321 to book your tuning service or discuss Stage 2 and security options!
