Mercedes-AMG ECU Remaps and Gearbox Tuning

Unlock the full performance of your Mercedes-AMG with our expert ECU remapping and gearbox tuning service in Slough. Specialising in high-performance AMG models, our bespoke remaps enhance power, torque, throttle response, and driving dynamics while maintaining engine and transmission reliability.

Using advanced diagnostic tools and precision tuning software, we optimise both the engine ECU and TCU (transmission control unit) to deliver smoother gear shifts, improved acceleration, and maximised performance. Whether your AMG is stock or modified, our remaps transform your car into a truly exhilarating driving experience.

Serving Slough, Langley, Berkshire, and nationwide, we are trusted by AMG enthusiasts for precision tuning, safe performance enhancements, and measurable power improvements.

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Why Choose Onyx Performance?

As Seen on Carwow

We’ve been proudly featured on Carwow – a testament to the quality, professionalism, and performance-focused results that set us apart. Watch our feature here to see us in action.

Expertise You Can Trust

With years of experience and deep technical knowledge, our team understands performance vehicles inside and out – from custom remaps to high-end servicing.

Advanced Workshop & Tools

We operate from a state-of-the-art facility in Slough, equipped with cutting-edge diagnostics, dyno testing, and industry-leading tools for accurate, high-quality work.

Tailored Solutions for Every Vehicle

We don’t believe in one-size-fits-all. Every car gets a bespoke approach, ensuring the best results whether it’s a remap, upgrade, or routine service.

Trusted Nationwide

Performance enthusiasts from across the UK come to Onyx because they know they’ll receive premium-quality workmanship, careful attention to detail, and honest advice.

Complete Care, All in One Place

From tuning and servicing to tyres, trackers, and immobilisers – we offer a full suite of services under one roof, all with a strong focus on safety, reliability, and top-tier customer support.

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Mercedes-AMG ECU Remapping and Gearbox Tuning in Slough

Upgrade your AMG with our custom ECU and gearbox tuning service, enhancing power, torque, throttle response, and gearshift performance. Book your Slough-based Mercedes-AMG performance tune today and enjoy a smoother, faster, and more responsive drive.

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Why Choose Onyx Performance for Servicing?

Experts in Performance Cars

We know how to properly care for performance, modified, and luxury vehicles. Our team has the skills and experience to handle specialist requirements confidently.

Correct Service Schedules

Every service follows the exact schedule recommended by your vehicle’s manufacturer, helping maintain performance and protect your warranty.

Quality or OEM Parts

We only use high-quality aftermarket or original manufacturer parts, ensuring long-lasting reliability and top-level performance.

Full Vehicle Inspection

Our service goes beyond just changing oil. We inspect all key systems to keep your car safe, smooth, and road-ready.

Honest Advice, No Surprises

With transparent pricing and expert recommendations, you’ll always know what your car needs – no upselling, no hidden fees.

Fast, Trusted & Tracked

We offer quick turnaround, maintain service records, and send reminders – that’s why customers travel to us from across the UK.

Frequently Asked Questions

What is Mercedes-AMG ECU remapping?

It’s the process of optimising your AMG’s ECU to increase power, torque, and improve throttle response while maintaining engine safety.

What is TCU (gearbox) tuning?

TCU tuning optimises gearbox behaviour, improving shift speed, smoothness, and responsiveness for enhanced performance.

Can you remap both stock and modified AMG models?

Yes — we provide bespoke ECU and TCU remaps for both stock vehicles and performance-modified cars.

Is AMG ECU and gearbox tuning safe?

Absolutely — all remaps are precision-tested to ensure engine and transmission reliability.

What performance improvements can I expect?

Expect smoother acceleration, faster gear shifts, improved torque delivery, and maximised engine output.

Do you offer Mercedes-AMG tuning outside Slough?

Yes — while based in Slough, we provide nationwide ECU remapping and gearbox tuning for all AMG models.

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