Audi RS3 8V / TTRS 2.5 TFSI 2015-2017 Remapping & Performance Upgrades – Onyx Performance
The Audi RS3 8V and TTRS 2.5 TFSI (2015-2017) feature a high-performance five-cylinder turbocharged engine, renowned for its power delivery and exhilarating driving experience. At Onyx Performance, we offer dyno-tested custom ECU and gearbox remaps, optimised to unlock the full potential of your RS3 or TTRS while maintaining reliability.
Our Stage 1 and Stage 2 tuning solutions are meticulously developed on our state-of-the-art 4WD rolling road dyno, ensuring safe and effective power gains tailored to your vehicle.
Audi RS3 8V / TTRS 2.5 TFSI (2015-2017) – Stage 1 & Stage 2 Remapping
Stage 1 – Optimised ECU Software for Stock Hardware
- Stock Power: 362HP / 465Nm
- Stage 1 Power Gains: 425HP / 600Nm
- Hardware Required: None
A Stage 1 remap enhances the engine control unit (ECU) calibration, optimising boost pressure, ignition timing, and fuel delivery to significantly increase power, throttle response, and overall drivability without requiring hardware modifications.
Stage 2 – Performance ECU Remap with Supporting Modifications
- Stock Power: 362HP / 465Nm
- Stage 2 Power Gains: 425-470HP / 620-660Nm
- Hardware Required:
✅ Secondary Decat Downpipe or High-Flow Sports Catalyst (Maximises turbo efficiency and improves exhaust flow)
✅ Upgraded Air Filter (Enhances airflow for better combustion and throttle response)
✅ Bigger Intercooler (Reduces intake temperatures for consistent power delivery)
✅ Cat-Back Exhaust System (Optional but recommended) (Improves sound and enhances turbo spool)
✅ Onyx Performance Stage 2 Gearbox Software (Optimises shift speed, launch control & torque delivery)
A Stage 2 remap extracts maximum power and torque, delivering faster acceleration, sharper throttle response, and improved turbo performance, while maintaining smooth drivability and engine longevity.
Performance figures may vary based on modifications and fuel quality.
Onyx Performance – Audi RS3 8V / TTRS 2.5 TFSI 2015-2017 Remap Service Includes:
✔ Rolling Road (Dyno) Testing – Precise measurement of power before and after tuning
✔ Live Data Logging & Diagnostics – Ensuring safe and optimal ECU calibration
✔ Before & After Performance Printouts – Transparent, measurable performance improvements
✔ Engine Smoke Test – Checking for any 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 driving modes
✔ Speed Limiter Removal – Unlocking the full top-speed potential
✔ Custom ECU Calibration – Tailored tuning to match your vehicle’s unique characteristics
Exhaust Upgrades for Audi RS3 8V / TTRS 2.5 TFSI 2015-2017
Enhance both performance and exhaust tone with our premium exhaust upgrade options:
? Secondary Decat Downpipes – Optimises turbo efficiency and maximises power output
? High-Flow Sports Catalysts – Reduces exhaust 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 enhances power delivery and produces a more aggressive exhaust note.
Servicing & Maintenance for Audi RS3 8V / TTRS 2.5 TFSI
Regular maintenance is crucial to keep your RS3 or TTRS running at peak performance. At Onyx Performance, we provide:
? Routine Servicing – Oil changes, filter replacements, and essential inspections
? Brake Repairs & Upgrades – OEM replacements and high-performance braking systems
? Suspension Checks & Upgrades – Enhancing handling and ride quality
? Advanced Diagnostics & Fault Repairs – Identifying and resolving engine and drivetrain issues
Our team also updates your digital service history, ensuring full maintenance records for your vehicle.
Vehicle Security & Immobilisers for Audi RS3 8V / TTRS 2.5 TFSI
Protect your high-performance Audi with our advanced vehicle security solutions:
? Autowatch Ghost Immobiliser – Prevents key cloning and unauthorised vehicle starts
? MetaTrak Trackers – Live GPS tracking for real-time vehicle monitoring
? Scorpion Track Systems – Provides motion alerts and driver recognition for added protection
? Fleet Tracking Solutions – Ideal for managing multiple high-value vehicles
All security solutions are professionally installed for seamless integration and maximum protection.
Why Choose Onyx Performance for Audi RS3 8V / TTRS 2.5 TFSI Tuning?
✔ Audi 2.5 TFSI Engine Tuning Specialists – Years of expertise in high-performance Audi models
✔ Dyno-Tested ECU & DSG Software – Developed in-house on our 4WD rolling road dyno
✔ Custom ECU & DSG Tuning – Optimised throttle response, turbo boost control, and gearbox performance
✔ Full Vehicle Health Check Before Tuning – Ensuring engine safety and long-term reliability
✔ Flexible Finance Options Available – Making performance tuning more accessible
Unlock the Full Potential of Your Audi RS3 8V / TTRS 2.5 TFSI with Onyx Performance
Whether you’re looking for a Stage 1 remap for improved drivability or Stage 2 tuning for maximum power and performance, Onyx Performance provides the ultimate tuning solutions for your Audi RS3 or TTRS.
? Located in Slough, Berkshire – Serving Audi performance enthusiasts across the UK
? Contact us today to book your remap and experience the ultimate performance upgrade!
? Transform your Audi RS3 / TTRS with Onyx Performance! ?