Onyx Performance in Slough

We are an ECU Remapping Specialist and Tuning house based in Berkshire offering a National 4WD Dyno Tuning Service at our workshop. All our software is developed on our state of the art 4WD Dyno handling vehicles with over 1500hp
Our services include a wide variety from Performance tuning to engine and gearbox servicing, dyno runs, window tinting and engine carbon cleaning.
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.

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