Onyx Performance - Rolling Road Tuning

Onyx Performance - Rolling Road Tuning We are an ECU Remapping Specialist and Tuning house offering a 4WD Dyno Tuning Service in Slough.

20/07/2026

BMW 540i in for our Stage 1 performance package. 🔥

Before tuning, we carried out a full maintenance service to make sure the car was in top condition. This included:
✅ Engine oil & filter
✅ Air and cabin filters
✅ Gearbox service
✅ New spark plugs

Once everything was dialled in, we completed our custom Stage 1 remap, bringing the car back to life with a significant increase in power, sharper throttle response, and a much more exciting driving experience.

Another happy customer and another BMW transformed. 💪

The Audi RS7 is in for a full Stage 2 package! 🔥 This one is about to be transformed with more power, performance, and s...
20/07/2026

The Audi RS7 is in for a full Stage 2 package! 🔥 This one is about to be transformed with more power, performance, and sound.

Make sure you’re following us so you don’t miss the full build and reveal video coming soon. 👀🏁

16/07/2026

BMW 540I GETTING READY TO BE TUNED 🔥

13/07/2026

Mercedes-AMG C43 AMG is on the dyno today for a custom tuning session.

Precision calibration, optimised performance, and unlocking every bit of potential built for drivers who want more than factory settings.

Stay tuned for the power figures. 🔥💨

09/07/2026

Turbo failure? This van came in today after the turbo failed due to excessive back pressure caused by a blocked DPF.

We diagnosed the issue, sorted the DPF problem, and fitted a replacement turbo to get the van back on the road and running properly.

If your vehicle is showing signs of turbo problems: loss of power, smoke, unusual noises, or warning lights don’t leave it until it fails. Get in touch and we’ll diagnose the issue and get you sorted.

📩 Message us today to book your vehicle in.

VW Golf GTI in for a Stage 1 Tune & Carbon Steering Wheel Upgrade! 🔥Another GTI transformed with a Stage 1 remap and a s...
07/07/2026

VW Golf GTI in for a Stage 1 Tune & Carbon Steering Wheel Upgrade! 🔥

Another GTI transformed with a Stage 1 remap and a stunning carbon fibre steering wheel for improved performance and a premium interior finish. 💨⚡

Looking to unlock more power from your car? Whether you’re after a Stage 1, Stage 2, or Stage 3 build, we’ve got you covered.

We offer a wide range of performance upgrades and modifications for the majority of cars on the road.

📩 DM us today to discuss your build and get a quote!

29/06/2026

AUDI RS3 STAGE 2 🔥

Ready to transform your RS3?

DM us today to book your tune.

29/06/2026

AUDI RS3 STAGE 2 – TUNED AT ONYX 🔥

Custom ECU & TCU tuning, developed and calibrated on the dyno for maximum performance, drivability, and reliability.

Ready to transform your RS3?
DM us today to book your tune.

Ferrari FF V12 in with us for a full refresh. 🐎🔧This one received:✔️ Alloy wheel refurbishment✔️ New tyres fitted with g...
26/06/2026

Ferrari FF V12 in with us for a full refresh. 🐎🔧

This one received:
✔️ Alloy wheel refurbishment
✔️ New tyres fitted with genuine Ferrari OEM stamp
✔️ Full major service using genuine OEM Ferrari parts
✔️ Comprehensive vehicle inspection

Keeping this V12 grand tourer looking its best and performing exactly as it should.

Need servicing, maintenance, repairs or inspections for your performance car?

📩 DM us today to book your vehicle in.

A stunning Ferrari California V8 in with us for a full major service, using genuine OEM Ferrari parts supplied by H.R. O...
26/06/2026

A stunning Ferrari California V8 in with us for a full major service, using genuine OEM Ferrari parts supplied by H.R. Owen Ferrari. 🔧🐎

Keeping your Ferrari performing exactly as it should with specialist care and attention to detail.

Does your car need a service or maintenance? Get in touch today.

📩 DM us now to book your vehicle in.

Address

Slough
SL37EW

Opening Hours

Monday 10am - 6pm

Telephone

+441753439321

Website

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