Audi RS3 8V / RSQ3 / TTRS 2.5TFSI Performance Remapping – Onyx Performance
The Audi RS3 8V, RSQ3, and TTRS 2.5TFSI models are among the most powerful and exhilarating performance cars on the road today. At Onyx Performance, we offer custom ECU and gearbox tuning to unlock the full potential of these vehicles. Our Stage 1 and Stage 2 remaps are meticulously developed on our state-of-the-art 4WD rolling road dyno, ensuring maximum performance gains while maintaining reliability.
Audi RS3 8V / RSQ3 / TTRS 2.5TFSI – Stage 1 & Stage 2 Remapping
Stage 1 – Optimised ECU Software for Stock Hardware
- Stock Power: 400HP / 465Nm
- Stage 1 Power Gains: 480HP / 620Nm
- Hardware Required: None
A Stage 1 remap is designed for standard hardware setups, optimising the engine control unit (ECU) calibration to enhance boost pressure, ignition timing, and fuel efficiency. This results in significantly improved throttle response, acceleration, and power delivery, all while maintaining factory reliability.
Stage 2 – Performance ECU Remap with Supporting Modifications
- Stock Power: 400HP / 465Nm
- Stage 2 Power Gains: 490-520HP / 620-660Nm
- Hardware Required:
✅ Secondary Decat Downpipe or High-Flow Sports Catalyst (Improves turbo efficiency and enhances exhaust flow)
✅ Upgraded Air Filter (Increases airflow and enhances combustion efficiency)
✅ Bigger Intercooler (Lowers intake temperatures for consistent power output)
✅ Cat-Back Exhaust System (Optional but recommended) (Enhances sound and turbo response)
✅ Onyx Performance Stage 2 Gearbox Software (Optimises shift points, torque delivery & launch control settings)
A Stage 2 remap is designed for vehicles with performance modifications, fine-tuning the ECU and transmission software to extract even greater power, improved turbo efficiency, and sharper throttle response.
Performance figures may vary depending on modifications and fuel quality.
Onyx Performance – Audi RS3 8V / RSQ3 / TTRS 2.5TFSI Remap Service Includes:
✔ Rolling Road (Dyno) Testing – Measuring power before and after tuning
✔ Live Data Logging & Diagnostics – Ensuring safe and optimal ECU calibration
✔ Before & After Performance Printouts – Providing clear power gains and improvements
✔ Engine Smoke Test – Checking for boost or vacuum leaks
✔ Catalyst Efficiency Fault Code Delete (Optional) – Prevents warning lights after exhaust modifications
✔ Sport Mode Overrun Crackles (Optional) – Enhancing exhaust sound in dynamic drive modes
✔ Speed Limiter Removal – Unlocking full top-speed potential
✔ Custom ECU Calibration – Tailored tuning to maximise performance and reliability
Exhaust Upgrades for Audi RS3 8V / RSQ3 / TTRS 2.5TFSI
Enhance your vehicle’s sound and performance with our premium exhaust upgrade options:
? Secondary Decat Downpipes – Maximises turbo efficiency and power output
? High-Flow Sports Catalysts – Reduces restriction while remaining emissions compliant
? Cat-Back Exhaust Systems – Improves sound quality and enhances exhaust flow
? GPF (Gasoline Particulate Filter) Delete – Recommended for maximum sound and performance
Pairing Stage 2 tuning with an upgraded exhaust system significantly improves power delivery and produces a more aggressive exhaust note.
Servicing & Maintenance for Audi RS3 8V / RSQ3 / TTRS 2.5TFSI
Routine maintenance is key to ensuring peak performance and long-term reliability. At Onyx Performance, we offer:
? Routine Servicing – Oil changes, filter replacements, and essential system checks
? Brake Repairs & Upgrades – OEM replacements and high-performance brake systems
? Suspension Inspections & Upgrades – Enhancing handling and ride quality
? Advanced Diagnostics & Fault Repairs – Identifying and resolving engine and drivetrain issues
We also update your digital service history, ensuring full records for your vehicle.
Vehicle Security & Immobilisers for Audi RS3 8V / RSQ3 / TTRS 2.5TFSI
Protect your high-performance Audi with advanced security solutions:
? Autowatch Ghost Immobiliser – Prevents key cloning and unauthorised starts
? MetaTrak Trackers – Live GPS tracking with mobile app monitoring
? Scorpion Track Systems – Motion alerts and driver recognition for added security
? Fleet Tracking Solutions – Ideal for managing multiple high-value vehicles
All security systems are professionally installed, ensuring seamless integration and maximum protection.
Why Choose Onyx Performance for Audi RS3 8V / RSQ3 / TTRS Tuning?
✔ Specialists in Audi 2.5TFSI Performance Tuning – Years of experience in tuning high-performance Audi models
✔ Dyno-Tested ECU & Gearbox Software – Developed in-house on our 4WD rolling road dyno
✔ Bespoke ECU & Gearbox Remapping – Optimised throttle response, turbo control, and shift mapping
✔ Full Vehicle Health Check Before Tuning – Ensuring long-term engine reliability and safety
✔ Flexible Finance Options Available – Making performance tuning more accessible
Unlock the Full Potential of Your Audi RS3 8V / RSQ3 / TTRS 2.5TFSI with Onyx Performance
Whether you’re looking for a Stage 1 remap for enhanced drivability or Stage 2 tuning for ultimate power, Onyx Performance provides the highest-quality tuning solutions for your Audi.
? Located in Slough, Berkshire – Serving Audi owners across the UK
? Contact us today to book your remap and experience the ultimate performance upgrade!
? Transform your Audi RS3, RSQ3, or TTRS with Onyx Performance! ?