In today’s demanding agricultural environment, getting the most from your machinery is more important than ever. That’s why more and more farmers are turning to JCB ECU remapping to improve performance, increase efficiency, and reduce fuel costs across their fleet. Whether you’re running a JCB Fastrac, Loadall, or Telehandler, a professional ECU remap for JCB equipment can offer real, measurable benefits.

What Is JCB ECU Remapping?

ECU tuning for JCB machines involves modifying the software that controls the engine’s performance. By accessing the Engine Control Unit (ECU), parameters can safely be adjusted such as fuel injection, turbo boost pressure, and torque limits. The result? More power, better throttle response, and improved fuel economy — all without any physical modifications to the machine.

At MJ Agri Tuning, we provide expert JCB tuning services across South Wales and surrounding areas, using industry-leading equipment and tested software files.

What Are the Benefits?

There are multiple advantages to choosing a JCB remap for your agricultural machine:

✅ Increased horsepower and torque: Ideal for heavy-duty fieldwork or hauling.

✅ Improved throttle response: Get smoother power delivery and greater drivability.

✅ Cost-effective power upgrade: No need for hardware changes or bolt-on parts.



Whether you’re managing a single machine or an entire fleet, a JCB engine remapping service can deliver significant long-term savings.

Popular JCB Models We Remap

We specialise in ECU remapping for a wide range of JCB machines, including:

🔧 JCB Fastrac ECU remapping – including the popular JCB 4220 remap

🔧 JCB 435S tuning – unlock full potential from your silage and loader tractors

🔧 JCB Loadall ECU remap – for better performance and fuel efficiency

🔧 ECU tuning for JCB Telehandlers – maximise engine response

Each JCB software remap is tailored to the exact ECU version and engine type, ensuring a safe, reliable result that stays within manufacturer-safe limits.

Mobile Tuning – We Come to You

Our mobile JCB tuning service covers farms across South Wales and surrounding areas. With on-site diagnostics and custom software adjustments, we can remap your JCB ECU quickly and professionally — without taking your machine off the job.

We also carry out pre-remap health checks and post-remap data analysis to ensure your machinery is running at its best.

Ready for a JCB Power Upgrade?

If you're ready to increase output and save on operating costs, a JCB power upgrade through ECU remapping is a smart investment. Contact MJ Agri Tuning today to schedule your JCB engine remap or to learn more about our services.

✅ JCB ECU remapping you can trust — done right, every time.