Gearbox TCU Remapping and Transmission Tuning Service

Gearbox TCU Remapping & Transmission Tuning

Enhance your driving experience with our gearbox TCU remapping and transmission tuning service in Slough. Whether you drive a performance car, luxury vehicle, or daily driver, our expert technicians optimise your transmission control unit (TCU) for smoother gear changes, faster shifts, and improved overall drivability.

Our TCU remapping service is ideal for vehicles with modified engines, upgraded turbochargers, or performance enhancements, ensuring your gearbox keeps up with your engine’s increased power and torque. Using advanced diagnostic tools, we deliver precise, reliable, and safe tuning that improves acceleration, responsiveness, and comfort without compromising transmission longevity.

Serving Slough, Langley, Berkshire, and nationwide, our team is trusted by drivers for professional gearbox tuning, helping you achieve maximum performance, efficiency, and driving enjoyment from every gear shift.

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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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Professional Gearbox TCU Remapping in Slough

Transform your driving experience with our Slough-based TCU remapping and transmission tuning service. Achieve smoother gear shifts, faster response, and optimised performance for your car. Book your gearbox remap today and enjoy precision transmission tuning.

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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 gearbox TCU remapping?

Gearbox TCU remapping is the process of optimising your transmission control unit to improve gear shift speed, smoothness, and overall drivability.

Which vehicles benefit from TCU remapping?

Performance cars, luxury vehicles, and daily drivers with engine upgrades benefit from faster shifts, improved acceleration, and smoother operation.

Can TCU remapping handle modified engines?

Yes — remapping ensures your gearbox matches your engine’s increased power and torque, maintaining performance and reliability.

Is transmission tuning safe?

Absolutely — our technicians use advanced diagnostic tools and tested remap strategies to ensure safe, reliable tuning without affecting gearbox longevity.

How long does TCU remapping take?

Most TCU remaps take around 1–2 hours, depending on the vehicle and level of customisation.

Do you provide TCU remapping outside Slough?

Yes — while based in Slough, we offer gearbox remapping and transmission tuning nationwide, with expert guidance for all car types.

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