Audi RS5 Saloon / Avant B10 Remap & Tuning
Upgrade your Audi RS5 B10 639HP with professional Stage 1 and Stage 2 tuning from Onyx Performance in Slough, Berkshire.
The Audi RS5 B10 uses the 2.9 TFSI plug-in hybrid petrol engine and responds very well to tuning. Whether you want more performance from a standard car or are planning further upgrades, we can help with the complete setup.
We also offer gearbox tuning, servicing, diagnostics, exhausts, intakes, intercoolers, suspension, brakes, styling and vehicle security.
Suitable for Audi RS5 Saloon / Avant B10 639HP models from 2026 to present.
Audi RS5 B10 Stage 1 Remap
Standard: 639HP / 825Nm
Stage 1: TBC
Stage 1 is ideal for a standard or lightly modified Audi RS5 B10. Major engine upgrades are normally not required.
Stage 1 tuning can improve:
- Power and torque
- Throttle response
- Acceleration
- Mid-range performance
- Overtaking performance
- Overall engine response
The car will feel noticeably stronger while remaining smooth and easy to drive every day.
Gearbox tuning is also available where suitable.
Audi RS5 B10 Stage 2 Tuning
Stage 2: TBC
Stage 2 is for customers looking for more performance with the correct supporting upgrades.
Typical Stage 2 upgrades can include:
- Performance downpipe or sports catalyst
- Upgraded air intake
- Larger intercooler
- Performance exhaust
- Gearbox tuning
- Other supporting upgrades where required
Already have performance parts fitted? We can check your current setup and advise what else may be required.
Call 01753 439321 to discuss a Stage 2 package.
Power figures are estimated and can vary depending on fuel quality, vehicle condition, software version and modifications fitted.
Audi RS5 Gearbox Tuning
We offer gearbox tuning for compatible Audi RS5 B10 models.
Gearbox tuning can improve:
- Gear change response
- Shift speed
- Torque handling
- Gearbox response
- Power delivery
- How the gearbox works with the increased engine power
We can advise whether gearbox tuning is recommended for your car.
Before Tuning
Every vehicle booked for tuning receives a full diagnostic scan before the remap is carried out.
We check for stored faults and anything obvious that could affect the tuning.
Where required, we may also carry out:
- Smoke testing
- Boost leak checks
- Intake leak checks
- Misfire checks
- Basic engine health checks
If we find a problem that could affect the tuning or reliability of the vehicle, we will discuss it with you before continuing.
Any repairs, replacement parts or further diagnostic work are charged separately and will only be carried out with your approval.
Servicing and Maintenance for Audi RS5 B10
Keep your Audi RS5 B10 properly maintained with servicing and repair work from our Slough workshop.
We offer:
- Oil and filter servicing
- Interim and major servicing
- Spark plug replacement
- Gearbox servicing
- Quattro system servicing where applicable
- Brake repairs and upgrades
- Diagnostics
- Cooling system repairs
- Suspension repairs
- Engine repairs
- General maintenance
Keeping a tuned Audi RS5 properly serviced is important for performance and reliability.
Audi RS5 B10 Exhaust Upgrades
Want your Audi RS5 to sound better?
We can supply and fit:
- Performance exhaust systems
- Cat-back exhaust systems
- Performance downpipes
- Sports catalysts
- Resonator deletes
- Exhaust modifications
- Custom exhaust work
We can help you choose the right setup depending on whether you want something subtle or more aggressive.
Audi RS5 B10 Performance Upgrades
We can supply and fit a wide range of performance upgrades, including:
- Performance air intakes
- Turbo inlet upgrades
- Intercoolers
- Downpipes
- Sports catalysts
- Performance exhausts
- Spark plugs
- Turbo upgrades
- Fuel system upgrades
- Lowering springs
- Coilovers
- Brake upgrades
If you are planning a Stage 2 or higher power setup, speak to us before buying parts. We can help you choose the right upgrades for your target.
Styling and Body Upgrades
Transform the look of your Audi RS5 B10 with a range of styling upgrades.
Options can include:
- Front splitters
- Side skirts
- Rear diffusers
- Spoilers
- Bodykits
- Carbon styling parts
- Black styling parts
- Lowering springs
- Wheel spacers
- Alloy wheel upgrades
Whether you want a clean factory-style look or something more aggressive, speak to our team about the options available.
Audi RS5 Vehicle Security
The Audi RS5 is a desirable performance car, so additional security is worth considering.
We offer:
- Ghost immobilisers
- Vehicle trackers
- Additional immobiliser systems
- Other vehicle security upgrades
Security can be fitted while your Audi RS5 is with us for tuning, servicing or other work.
Why Choose Onyx Performance?
At Onyx Performance in Slough, we can look after the complete Audi RS5.
Our services include:
- ECU remapping
- Gearbox tuning
- Diagnostics
- Servicing
- Mechanical repairs
- Exhaust upgrades
- Intakes
- Intercoolers
- Performance upgrades
- Suspension
- Brakes
- Styling and body upgrades
- Vehicle security
- Alloy wheel refurbishment
This means you can tune, service, repair and upgrade your RS5 in one place.
Audi RS5 B10 Remapping in Slough
Onyx Performance is based in Slough, Berkshire, close to Windsor, Langley, Maidenhead, Heathrow, Uxbridge, West London and surrounding areas.
If you are looking for Audi RS5 B10 remapping in Slough, Audi RS5 Stage 1 tuning, Audi RS5 Stage 2 tuning, Audi gearbox tuning or Audi performance upgrades, contact our team.
Frequently Asked Questions
How much power can an Audi RS5 B10 Stage 1 make?
Our Stage 1 target for the 639HP Audi RS5 B10 is TBC.
Does Stage 1 need any modifications?
Major hardware upgrades are normally not required for Stage 1. The vehicle should be in good mechanical condition before tuning.
How much power can Stage 2 make?
With the correct supporting upgrades, our Stage 2 target is TBC.
What upgrades are needed for Stage 2?
Typical upgrades can include an intake, downpipe or sports catalyst, larger intercooler and gearbox tuning.
What ECU does the Audi RS5 B10 use?
The Audi RS5 B10 commonly uses the Bosch MG1CS203 ECU. The exact ECU and software version can vary.
Do you offer gearbox tuning?
Yes. Gearbox tuning is available for compatible Audi RS5 B10 models.
Do you service Audi RS5 models?
Yes. We offer servicing, gearbox servicing, diagnostics, brakes, suspension, engine repairs and general maintenance.
Can you supply and fit performance parts?
Yes. We can help with intakes, intercoolers, exhausts, downpipes, suspension, brakes and other performance upgrades.
Do you fit Ghost immobilisers and trackers?
Yes. We offer Ghost immobilisers, vehicle trackers and other security upgrades, subject to vehicle compatibility.
Stage 3 Tuning: We also offer Stage 3 tuning for selected vehicles and engines. Get in touch to check whether Stage 3 tuning is available for your vehicle and to discuss the supporting upgrades required.
Please note: Some vehicles may require an ECU or TCU unlock before tuning. This may involve an additional cost and turnaround time. We will let you know before carrying out any extra work.
Book Your Audi RS5 B10 Remap
Ready to upgrade your Audi RS5?
Book your Audi RS5 B10 Stage 1 remap with Onyx Performance in Slough, or contact us to discuss Stage 2 tuning and supporting upgrades.
We can also help with gearbox tuning, servicing, diagnostics, exhausts, intakes, intercoolers, performance parts, styling, brakes, suspension and vehicle security.
Call: 01753 439321
Monday-Friday: 10AM-6PM
Saturday: 10AM-3PM
Onyx Performance – Audi RS5 B10 Remapping and Performance Tuning in Slough, Berkshire.
Contact Onyx Performance
Transform your Audi RS5 B10 today with Onyx Performance. Whether you’re looking for Stage 1 or Stage 2 remapping, performance exhaust systems, styling enhancements, or vehicle security solutions, our expert team is here to help.
📞 Call us now on 01753 439321 to book your tuning service or discuss Stage 2 and security options!
