Audi RS4 & RS5 B9 2.9L Twin-Turbo V6 Remapping by Onyx Performance
At Onyx Performance, we offer expertly developed ECU and gearbox tuning for the Audi RS4 Avant and RS5 Coupe (B9 2.9L Twin-Turbo V6). Our Stage 1 and Stage 2 remap software has been extensively tested on our state-of-the-art 4WD rolling road dyno, ensuring maximum power gains, improved throttle response, and optimal reliability.
Whether you’re looking to enhance everyday drivability with a Stage 1 remap or unlock maximum performance with Stage 2 modifications, we provide bespoke tuning solutions tailored to your Audi RS4 or RS5.
Audi RS4 & RS5 2.9L Twin-Turbo V6 Remap Service Includes:
✔ Rolling Road (Dyno) Testing – Before & after performance validation
✔ Live Data Logging – Ensuring safe & precise ECU adjustments
✔ Before & After Power Printouts – Verifiable tuning results
✔ Engine Smoke Test – Detecting boost & vacuum leaks before tuning
✔ Catalyst Efficiency Fault Code Delete (OPTIONAL) – Prevents MIL warnings on modified exhaust systems
✔ Overrun Crackles (OPTIONAL) – Enhancing exhaust acoustics on deceleration
✔ Speed Limiter Removal – Unlocking full performance potential
✔ Comprehensive Diagnostic Check – Ensuring vehicle health before tuning
Audi RS4 & RS5 2.9L Twin-Turbo V6 – Stage 1 & Stage 2 Performance Gains
Stage 1 Remap – Enhanced Power & Response
- Stock Power: 450HP / 600Nm
- Stage 1 Output: 510HP / 750Nm
- Hardware Required: None
A Stage 1 ECU remap offers a significant increase in power and torque without the need for additional hardware. It refines turbo boost control, throttle response, and fuel mapping for a more engaging and dynamic driving experience.
Stage 2 Remap – Maximum Performance Upgrade
- Stock Power: 450HP / 600Nm
- Stage 2 Output: 550HP / 770-820Nm*
- Hardware Required:
- Decat Downpipe or High-Flow Sports Catalyst (For improved exhaust flow and turbo efficiency)
- Cat-Back Exhaust System (Optional for Enhanced Sound & Power Delivery)
- Upgraded Air Filter for Increased Airflow
- Larger Intercooler for Enhanced Cooling Efficiency
- Onyx Performance Stage 2 Gearbox Software (For improved shift speeds and torque management on DSG models)
Stage 2 tuning unlocks the full potential of your Audi RS4 or RS5, delivering sharper throttle response, increased torque, and more aggressive power delivery while maintaining engine reliability.
Figures may vary depending on modifications and fuel quality.
Exhaust Upgrades for Audi RS4 & RS5 2.9L V6
Enhance your Audi RS4 or RS5’s exhaust sound and performance with our performance exhaust solutions:
? Decat Downpipes – Eliminates restrictions, improving turbo response and sound
? High-Flow Sports Catalysts – Reduces backpressure while remaining emissions compliant
? GPF (Gasoline Particulate Filter) Delete – Recommended for maximum power and sound improvement
? Cat-Back Exhaust Systems – Enhances sound and overall exhaust tone
Pairing Stage 2 tuning with a performance exhaust system allows for maximum power gains and a more aggressive exhaust note.
Servicing & Maintenance for Audi RS4 & RS5
Maintaining your Audi RS4 or RS5 B9 is crucial for long-term reliability and peak performance. At Onyx Performance, we offer:
? Routine Servicing – Oil changes, filter replacements, and essential maintenance
? Brake Upgrades & Repairs – OEM replacements and performance brake kits
? Suspension Optimisation – Improved handling and stability upgrades
? Advanced Diagnostics & Fault Repairs – Identifying and resolving performance-related issues
We also update your digital service history, ensuring your vehicle remains well-maintained and documented.
Vehicle Security & Immobilisers for Audi RS4 & RS5
Protect your Audi RS4 or RS5 with our advanced vehicle security solutions:
? Autowatch Ghost Immobiliser – Prevents key cloning and unauthorised starts
? MetaTrak Trackers – GPS tracking with real-time location monitoring
? Scorpion Track Systems – Motion alerts and driver recognition
? Fleet Tracking Solutions – Ideal for multiple high-value vehicles
Our security systems are professionally installed, ensuring seamless integration and maximum protection.
Why Choose Onyx Performance for Your Audi RS4 & RS5 Tuning?
✔ Experts in Audi 2.9L Twin-Turbo V6 Tuning – Specialist knowledge and extensive experience with RS models
✔ Dyno-Tested ECU & Gearbox Software – Developed in-house on our state-of-the-art 4WD rolling road dyno
✔ Custom ECU & DSG Tuning – Improved throttle response, turbo boost management, and gearbox calibration
✔ Comprehensive Health Check Before Tuning – Ensuring engine safety and long-term reliability
✔ Flexible Finance Options Available – Making high-performance tuning more accessible
Transform Your Audi RS4 or RS5 with Onyx Performance
Whether you’re looking for Stage 1 tuning for improved drivability or Stage 2 for maximum performance gains, Onyx Performance offers industry-leading tuning solutions for the Audi RS4 and RS5 B9.
? Located in Slough, Berkshire – Serving Audi RS tuning enthusiasts across the UK
? Contact us today to book your remap and unlock the true potential of your Audi RS4 or RS5!
? Experience the power of precision tuning with Onyx Performance! ?