About Us

Onyx Performance is an advanced tuning company based in Berkshire, West London offering custom ECU tuning and vehicle modifications.

Unleashing the true potential of a vehicle, depending on customer requirements this could be simply to extract as much performance as possible or to generate the most amount of fuel efficiency. 

4WD 1500hp Rolling Road 

We have a state of the art 1500hp 4WD dynamometer with full engine analysis capabilities to ensure our developments are providing you with the best power gains on the market whilst maintaining optimum reliability for your engine via our Dyno ECU Remapping service.

Would you like to find out what your car is pushing? Good, we also offer power runs on our dyno.

Vehicle Modifications

 We offer performance modifications including Turbo upgrades, Supercharger kits, Intercooler upgrades, Exhausts, Induction kits, Uprated Clutch kits, Performance Brake kits, Suspension, Bushes, HID Light kits and the list goes on, being innovators of performance tuning we work with the top aftermarket part suppliers.  

Servicing and Specialist Services

Onyx Performance is not just a performance house but we also offer Engine and Gearbox Servicing, Engine Carbon Cleaning, Boost Leak Smoke Test, DPF Cleaning, Window Tinting, Stereo Installations and Speaker Upgrades.

DPF Solution

We have a vast amount of experience with the often miss understood DPF systems on modern diesel vehicles and can offer a wide range of services depending on the customers’ requirements including cleaning or removal. We offer a professional cost effective solution to suit your needs.

Diagnostic and Programming

From fault finding to module programming and initialisation we have the equipment, knowledge and training. All our maps are fully custom and developed in house on our rolling road.

Onyx Performance - 4WD Rolling Road - Engine Carbon Clean - Servicing - Exhaust Systems

Head on over to our services page / drop down list to see a full list of the services we offer.