Volkswagen Golf GTI Mk7 / Mk7.5 2.0 TFSI Remapping and Tuning

Unlock the full potential of your Volkswagen Golf GTI Mk7 / Mk7.5 2.0 TFSI with Onyx Performance, based in Slough, Berkshire, just outside West London. Whether you’re looking for Stage 1 tuning for improved power and throttle response or Stage 2 tuning for maximum performance gains, we offer expert ECU remapping, servicing, performance upgrades, and vehicle security solutions tailored specifically for your Golf GTI.

Our Stage 1 and Stage 2 software has been extensively developed and tested on our 4WD Dyno, and we work with leading software and hardware specialists across Europe to deliver the best combination of power, reliability, and drivability.

Volkswagen Golf GTI Mk7 / Mk7.5 Stage 1 & Stage 2 – Power Gains

Stage 1 – Power Gains:

Stock Performance: 245HP / 370Nm
Stage 1 Remap: 310HP / 475Nm
Hardware Required: None

Our Stage 1 remap is designed for standard vehicles, offering a significant increase in power and torque without the need for additional hardware. By optimising the ECU calibration, we enhance throttle response, turbo efficiency, and acceleration, making the Golf GTI more dynamic and engaging to drive.

Stage 2 – Power Gains:

Stock Performance: 245HP / 370Nm
Stage 2 Remap: Up to 340HP / 560Nm*
Hardware Required:
- Decat Downpipe or High-Flow Sports Catalyst
- Cat-Back Exhaust System (Optional but Highly Recommended)
- Upgraded Air Filter
- Larger Intercooler
- Onyx Performance Stage 2 Gearbox Software
- Spark Plug and Ignition Coil Upgrade (Recommended for Optimal Performance & Reliability at Higher Power Levels)

Stage 2 tuning builds upon Stage 1 by introducing essential hardware modifications, improving intake airflow, cooling efficiency, and exhaust flow to deliver higher power output and stronger mid-range torque.

Stage 2 performance figures may vary depending on installed modifications.

Onyx Performance – Volkswagen Golf GTI Mk7 / Mk7.5 Remap Service Includes:

✔ Rolling Road (Dyno) Session for accurate power measurement
✔ Data Logging and Diagnostics to ensure optimal tuning
✔ Before and After Performance Printouts
✔ Engine Smoke Test to check for Boost/Vacuum Leaks
✔ Catalyst Efficiency Fault Code Delete (Optional)
✔ Overrun Crackles / Pops & Bangs (Optional)
✔ Speed Limiter Removal (Optional)
✔ Comprehensive Diagnostic Check

Our remaps are developed in-house and extensively tested to provide maximum performance without compromising reliability.

Exhaust Upgrades for Volkswagen Golf GTI

Enhance the sound and performance of your Golf GTI with a high-performance exhaust system:

? Decat Downpipe or High-Flow Sports Catalyst – Improves turbo efficiency and exhaust flow for maximum power
? Cat-Back Exhaust System – Optimises exhaust tone, turbo response, and performance
? GPF Delete (For GPF-Equipped Models) – Recommended for maximum sound and power
? Resonator Deletes – Adds a sportier, more aggressive exhaust note

Pairing Stage 2 tuning with a decat downpipe or high-flow sports catalyst allows for enhanced power delivery and improved exhaust acoustics.

Servicing and Maintenance for Volkswagen Golf GTI

Keeping your Volkswagen Golf GTI Mk7 / Mk7.5 in top condition is essential for long-term reliability and performance. At Onyx Performance, we offer:

? Routine Servicing: Oil changes, filter replacements, and general maintenance
? Brake Repairs and Upgrades: OEM replacements and high-performance brake kits
? Suspension Maintenance & Upgrades: Ensuring optimal handling and ride quality
? Diagnostics and Fault Repairs: Advanced system scans to identify and resolve potential issues

With our expertise in Volkswagen tuning and maintenance, we provide specialist care for your Golf GTI, ensuring it runs at peak performance.

Styling, Performance Upgrades & Vehicle Security

Enhance your Volkswagen Golf GTI 2.0 TFSI with custom styling, performance upgrades, and vehicle security solutions tailored to your needs:

Styling and Performance Upgrades:

? Aero Kits & Carbon Fibre Components – Stylish, aerodynamic enhancements
? Lowering Springs & Coilovers – Improved handling and stance for a sportier feel
? Big Brake Kits – High-performance braking systems for superior stopping power

Vehicle Security Solutions:

Protect your Volkswagen Golf GTI with advanced security solutions, ensuring peace of mind:

? Autowatch Ghost Immobilisers – Prevents key cloning and unauthorised starts
? MetaTrak Trackers – Live GPS tracking with mobile app integration
? Scorpion Track Systems – Motion alerts and driver recognition for enhanced security
? Fleet Trackers – Ideal for tracking and securing multiple high-value vehicles

Our security solutions are professionally installed to ensure seamless operation and protection.

What Our Customers Say

⭐ “Stage 1 tuning made a huge difference to my Golf GTI! The power increase is noticeable, and throttle response is much sharper. Fantastic service from Onyx Performance!”
– Oliver M., London

⭐ “Stage 2 tuning with the upgraded exhaust and intake transformed my Golf GTI! The power gains and exhaust sound are incredible!”
– James T., Manchester

Opening Hours and Contact Information

? Visit Us:

Location: Slough, Berkshire
Opening Hours:
Monday–Friday: 10 AM–6 PM
Saturday: 10 AM–3 PM
Closed Sundays
? Phone: 01753 439321
? Email: info@onyxperformance.co.uk

About Onyx Performance

At Onyx Performance, we specialise in high-quality tuning, remapping, servicing, upgrades, and security solutions for Volkswagen Golf GTI Mk7 / Mk7.5 models, ensuring maximum performance, reliability, and safety.

Our experienced team is committed to providing the best tuning solutions in the UK for Volkswagen performance vehicles.

Flexible Finance Options

? Spread the cost of your Volkswagen Golf GTI tuning, performance upgrades, and security solutions with our flexible finance plans, available over 4 monthly payments.

✅ All prices include VAT
✅ No hidden fees
✅ Simple application process

Contact Onyx Performance

Transform your Volkswagen Golf GTI Mk7 / Mk7.5 2.0 TFSI 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!

Explore all tuning packages in our shop – Klarna, PayPal & Clearpay available at checkout!

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