Onyx Performance

Unit F2 Deseronto Trading Estate, St. Marys Rd, Slough, SL3 7EW Directions

   Now closed Open today 10:00 - 18:00

Why Choose Us?

First Class Service
Free High Speed Internet
Group Packages

Business overview

Mechanical and Maintenance of Vehicles

We are an ECU Remapping Specialist and Tuning house offering a National 4WD Dyno Tuning Service in Slough, Berkshire.

Our services include a wide variety from Performance tuning to Dyno Runs, Engine & Gearbox Servicing, Premium Tyre Fitting, Diamond Cut Alloy Refurbishment, Window Tinting and BMW Module Coding. Using some of the most advanced and sophisticated equipment available, combined with years of experience we are able to tune the vast majority of vehicles on the road today.

We supply and fit engine modifications including hybrid turbos, upgraded intercoolers, performance exhaust systems, induction and suspension upgrades being innovators of performance tuning we work with the top aftermarket part suppliers.

BMW and Audi Dyno Remapping near me



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Products & Services

Alarm Systems

Alloy Wheel Refurbishment

Alloy Wheel Repairs

Audi Garage

BMW Garage

Brakes and Clutches

Brakes Repairs

Car Alarm Fitting

Car Alarms

Car Batteries

Car Brakes

Car Diagnostics

Car Engine Tuning and Conversion

Car Engines

Car Repairs

Car Security

Car Servicing

Car Suspension Adjustment


Cylinder Head Repairs

Diesel Engines

Engine Diagnostics

Engine Parts

Engine Rebuilds

Engine Reconditioning

Exhaust Systems

Ford Garage

Fuel Injection


Mercedes Garage

Oil Change

Petrol Engines

Rolling Roads

Wheel Balancing

Window Tinting

Number Plates

Tyre Changing

Vehicle Registration Plates

Winter Tyres

DPF Removals


Excellent alloy refurbishment service

Dropped my car off to these guys to have all 4 of my Mercedes wheels diamond cut refurbished. They done a great job for a good price - i would recommend them to anyone for alloy refurbs.
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Highly Recommended

Highly recommend these guys, they remapped a few cars for me now including my RS3 and BMW 540i, guys have always got the job done spot on and I would highly recommend them.
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