Range Rover & Land Rover ECU Remapping Specialists

Unlock the true potential of your Range Rover or Land Rover with our professional ECU remapping service in Slough. Specialising in luxury 4x4s and performance SUVs, we provide custom ECU tuning that improves power, torque, throttle response, and fuel efficiency, while ensuring engine safety and reliability.

Our bespoke remaps are developed to suit the unique characteristics of Range Rover and Land Rover models, from daily-driven diesels to high-performance SVR editions. Using our in-house dyno and 4WD rolling road, we fine-tune your ECU under real-world load conditions for precision, safety, and measurable results.

Based in Slough, near Langley, Berkshire, we are trusted by Range Rover and Land Rover owners across the UK who demand luxury refinement paired with reliable performance gains.

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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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Range Rover & Land Rover ECU Remapping in Slough

Enhance your 4×4’s power, drivability, and efficiency with our custom ECU tuning service. Book your Slough-based Range Rover or Land Rover remap today and experience the perfect balance of performance and 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 benefits will ECU remapping give my Range Rover or Land Rover?

Expect increased power, stronger torque, smoother throttle response, and improved fuel efficiency.

Do you tune both diesel and petrol Land Rover models?

Yes — we provide custom remaps for both diesel and petrol engines, including TDV6, SDV8, and SVR models.

Is ECU remapping safe for my Land Rover engine?

Absolutely — our remaps are tested on our in-house rolling road to ensure safe and reliable performance.

Can I still use my Range Rover for towing after remapping?

Yes — in fact, remapping often provides more low-end torque, making towing smoother and easier.

How long does the tuning process take?

Most Range Rover and Land Rover ECU remaps take 2–3 hours, depending on the model.

Do you offer Land Rover ECU tuning outside Slough?

Yes — while based in Slough, we provide Range Rover and Land Rover ECU remapping services nationwide.

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