Local Essex tuning
Mobile ECU remapping, diagnostics and vehicle software support for drivers in Chelmsford and nearby areas.
SX Customs local service
Chelmsford drivers commonly look for reliable Stage 1 remapping, diesel diagnostics and mobile tuning that can be arranged around work and daily life.
Services include Stage 1 remapping, Stage 2 tuning advice, gearbox tuning where supported, AdBlue diagnostics, DPF diagnostics and EGR fault support.
Popular services in Chelmsford
Power, torque and response improvements for standard vehicles.
Custom tuning for modified cars with supporting hardware.
Sharper gear changes and improved drivability.
Diagnostics and software solutions for permitted uses.
DPF diagnostics and specialist software support.
Reliability-focused EGR diagnostics and solutions.
Ready to tune your vehicle?
Message us with your registration, engine size, current modifications and what you want from the vehicle.