Mercedes-AMG Dyno Power Runs and Custom ECU Tuning

Mercedes-AMG Dyno Power Runs & Custom ECU Tuning

Mercedes-AMG Dyno Power Runs & ECU Tuning

The Mercedes-AMG range combines luxury with explosive performance — and with our dyno power runs and custom ECU tuning, you can unlock even more from your AMG. At our Slough-based rolling road dyno facility, we specialise in precision dyno testing, Stage 1–3 ECU remapping, and bespoke AMG tuning for models including the A45, C63, E63, G63, GT, and more.

Using our 2WD & 4WD rolling road dyno, we measure your AMG’s true horsepower, torque, and power delivery under real driving loads. This data allows us to create a custom ECU map tailored to your AMG’s hardware and modifications, ensuring maximum power, sharper throttle response, and optimised drivability — all within safe limits.

Trusted by AMG enthusiasts in Slough, Berkshire, and across the UK, we deliver dyno-proven results that take your driving experience to the next level.

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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 Dyno Tuning in Slough Proven Gains with Precision ECU Mapping

Get the most out of your AMG with our custom dyno tuning packages. Whether you’re looking for a Stage 1 remap for instant gains on a stock car, a Stage 2 tune to complement upgrades like exhausts and intakes, or a Stage 3 bespoke calibration for a fully modified AMG, our team ensures safe, powerful, and dyno-verified results. Every session includes before-and-after dyno graphs, live ECU calibration, and expert performance advice. Book your dyno session today at our Slough AMG tuning facility.

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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

Which Mercedes-AMG models do you tune?

We tune the full AMG range, including A45, CLA45, C63, E63, S63, G63, AMG GT, and more.

What’s included in a dyno power run?

A complete dyno health check, power run, and printed graph showing your AMG’s horsepower and torque.

Do you offer Stage 1, Stage 2, and Stage 3 ECU remaps?

Yes — from Stage 1 for stock AMGs to Stage 3 custom tuning for fully modified builds, we provide tailored solutions.

Is dyno tuning safe for my AMG?

Yes — all mapping is carried out under controlled dyno conditions, keeping your engine within safe operating parameters.

Will dyno tuning improve drivability as well as power?

Yes — you’ll notice smoother power delivery, sharper throttle response, and improved mid-range torque.

Can you supply performance parts for Mercedes-AMG?

Yes — we can recommend and fit exhaust systems, intakes, intercoolers, and turbos to complement your AMG tuning.

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