Audi RS3 8V / TTRS 2.5TFSI 362HP (2015-2017) Remapping & Performance Tuning by Onyx Performance
At Onyx Performance, we specialise in custom ECU and gearbox tuning for the Audi RS3 8V / TTRS 2.5TFSI 362HP (2015-2017). Developed on our state-of-the-art 4WD rolling road dyno, our Stage 1 and Stage 2 remaps deliver increased power, sharper throttle response, and improved drivability, all while ensuring engine reliability and safety.
Our tuning solutions cater to a range of engine codes including CEPA, CEPB, CTSA, CZGA, CZGB, DAZA, DNWA, providing a tailored performance upgrade to suit each individual vehicle.
Audi RS3 8V / TTRS 2.5TFSI 362HP Remap Service Includes:
✔ Rolling Road (Dyno) Session – Power runs before and after tuning
✔ Data Logging & Live Performance Monitoring – Ensuring optimal tuning adjustments
✔ Before & After Power Printouts – Measured results to show real-world gains
✔ Engine Smoke Test – Checking for boost and vacuum leaks before tuning
✔ Catalyst Efficiency Fault Code Delete (OPTIONAL) – Preventing warning lights when running sports catalysts or decat systems
✔ Overrun Crackles (OPTIONAL) – Enhancing the exhaust sound on deceleration
✔ Speed Limiter Removal – Unlocking the full performance potential
✔ Comprehensive Diagnostic Check – Ensuring no underlying issues before tuning
Audi RS3 8V / TTRS 2.5TFSI Stage 1 & Stage 2 Tuning – Power Gains
Stage 1 Remap – Performance Upgrade
- Stock Power: 362HP / 465Nm
- Stage 1 Output: 425HP / 600Nm
- Hardware Required: None
A Stage 1 remap offers a significant power increase without requiring hardware modifications. Throttle response, turbo spool, and power delivery are optimised, transforming your Audi RS3 or TTRS into a more responsive and exhilarating drive.
Stage 2 Remap – Maximum Performance Upgrade
- Stock Power: 362HP / 465Nm
- Stage 2 Output: 425-470HP / 620-660Nm*
- Hardware Required:
- Secondary Decat Downpipe or High-Flow Sports Catalyst (For improved exhaust flow and performance)
- Cat-Back Exhaust System (Optional for Enhanced Sound & Performance)
- Upgraded Air Filter for Increased Airflow
- Larger Intercooler for Enhanced Cooling Efficiency
- Onyx Performance Stage 2 Gearbox Software (Highly Recommended for DSG Models)
Stage 2 tuning enhances power and torque further by improving exhaust flow, cooling, and turbo efficiency.
Power figures can vary depending on modifications and fuel quality.
Exhaust Upgrades for Audi RS3 & TTRS 8V
Upgrading the exhaust system is one of the most effective ways to enhance both performance and sound. We offer:
? Secondary Decat Downpipes – Improves turbo efficiency and reduces exhaust restriction
? High-Flow Sports Catalysts – Provides a balance between emissions compliance and performance gains
? GPF (Gasoline Particulate Filter) Delete – Recommended for maximum sound and power output
? Cat-Back Exhaust Systems – Enhances exhaust note and overall engine acoustics
Pairing a Stage 2 remap with a decat downpipe or high-flow sports catalyst ensures maximum power gains and a more aggressive exhaust note.
Servicing & Maintenance for Audi RS3 & TTRS 8V
Maintaining your Audi RS3 or TTRS is essential to ensure longevity and peak performance. At Onyx Performance, we offer:
? Routine Servicing – Oil changes, filter replacements, and essential inspections
? Brake Repairs & Upgrades – OEM replacements and high-performance braking solutions
? Suspension Maintenance – Checks and optimisations for handling and ride comfort
? Advanced Diagnostics & Fault Repairs – Preventative maintenance to keep your Audi running smoothly
As part of our service, we update your digital service history, ensuring your vehicle’s maintenance records remain up to date.
Vehicle Security & Immobilisers for Audi RS3 & TTRS 8V
Protect your high-performance Audi with state-of-the-art security solutions:
? Autowatch Ghost Immobiliser – Prevents key cloning and unauthorised starts
? MetaTrak Trackers – Live GPS tracking with mobile app integration
? Scorpion Track Systems – Motion alerts and driver recognition for ultimate protection
? Fleet Trackers – Ideal for multiple high-value vehicles with monitoring features
Our immobilisers and tracking solutions are professionally installed to provide seamless integration and maximum protection.
Why Choose Onyx Performance for Your Audi RS3 & TTRS Remap?
✔ Specialists in Audi 2.5TFSI Tuning – Years of experience in optimising performance for RS and TTRS models
✔ Dyno-Tested Software – Developed in-house on our 4WD rolling road dyno for proven performance gains
✔ Custom ECU & Gearbox Mapping – Ensuring smooth power delivery, enhanced throttle response, and increased reliability
✔ Comprehensive Health Check Before Tuning – Ensuring engine safety and long-term durability
✔ Flexible Finance Options Available – Making performance upgrades affordable and accessible
Transform Your Audi RS3 or TTRS Today with Onyx Performance
Whether you’re looking for Stage 1 for improved responsiveness or Stage 2 for maximum power output, Onyx Performance has the perfect tuning solution for your Audi RS3 8V or TTRS 2.5TFSI.
? Located in Slough, Berkshire – Serving Audi tuning enthusiasts across the UK
? Contact us today to book your custom remap and unlock the full potential of your Audi RS3 or TTRS!
? Experience the power of precision tuning with Onyx Performance! ?