Custom ECU Mapping with Dyno Tuning for Precision Performance

Custom ECU Mapping with Dyno Tuning

Achieve maximum performance, drivability, and reliability with our custom ECU mapping and dyno tuning service in Slough. Unlike generic remaps, our bespoke calibrations are developed specifically for your car and its modifications, ensuring precision power delivery and safe tuning parameters.

Using our state-of-the-art in-house 2WD & 4WD rolling road dyno, we tune your car under real-world load conditions. This allows us to optimise fuel delivery, boost control, and ignition timing, achieving the perfect balance of horsepower, torque, and efficiency. Whether you drive a daily car, performance vehicle, or high-end supercar, our ECU mapping delivers results you can feel — and see on the dyno.

Based in Slough, near Langley, Berkshire, we are trusted by enthusiasts and tuners nationwide for our precision dyno-tested ECU remapping services.

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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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Custom ECU Mapping & Dyno Tuning in Slough

Take control of your car’s performance with a bespoke ECU remap, tested on our rolling road dyno. Book your Slough-based tuning session today and experience precision power, proven results, and complete reliability.

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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 custom ECU mapping?

It’s a tailored tuning process where we adjust your car’s ECU specifically for its setup, modifications, and driving style.

Why combine ECU mapping with dyno tuning?

Dyno tuning ensures your remap is tested under real-world conditions, giving accurate, safe, and proven results.

Is dyno tuning safe for my engine?

Yes — our in-house rolling road allows us to monitor air-fuel ratios, boost levels, and ignition timing to keep everything within safe limits.

Can modified cars benefit from custom ECU mapping?

Absolutely — if you’ve upgraded your turbo, exhaust, intake, or intercooler, a custom map ensures those parts perform at their best.

How long does the process take?

A typical custom ECU map with dyno testing takes 3–4 hours, depending on your vehicle and modifications.

Do you offer this service outside Slough?

Yes — while our dyno facility is based in Slough, we welcome performance and supercar owners from across Berkshire and nationwide.

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