Performance Tuning in Sheffield

JBM Performance specialises in engine and gearbox tuning for Volkswagen, Audi, SEAT, CUPRA, Škoda, BMW and other performance vehicles at our Sheffield workshop. Our custom ECU remapping is developed in-house around your car, its modifications and how you use it, with results checked on our own rolling road. We also offer gearbox tuning to refine gear changes and complement the engine’s power delivery.

We also provide advanced diagnostics, transmission repairs and rebuilds, walnut blasting, servicing and specialist mechanical repairs. Our online shop supplies genuine and performance parts throughout the UK, with expert advice and workshop fitting available.