Mobile ECU Remapping — Agri & Plant

More power.
More torque.
Less diesel.

WCH Tuning brings dyno-proven ECU remapping straight to your yard, farm or site across South & West Wales. Tractors, telehandlers, diggers and static plant — tuned where they stand, tested before we leave.

Get a Free Quote How It Works
MOBILE — WE COME TO YOU FULLY INSURED NO FIX, NO FEE ADBLUE · DPF · EGR SOLUTIONS
WCH Tuning technician remapping a tractor ECU from a mobile workshop van
On-Site. On-Farm. Same Day.

-13%

Average Fuel Saving

+22%

Average Torque Gain

1,200+

Vehicles Tuned

Zero

Emissions Hardware Removed

What actually happens when we remap your machine?

Every diesel engine leaves the factory tuned conservatively — built to satisfy emissions rules across dozens of markets, not to get the most from your specific machine.

We connect directly to your ECU and rewrite the fuelling, boost and timing maps that control how the engine runs. The result is a tune built around how your tractor, digger or telehandler is actually worked.

No engine parts are changed. No warranty-voiding hardware is fitted. It's software, done properly, by someone who understands agricultural and plant diesel engines inside out.
What We Tune

Built for the machines that do the real work

Sed pede ullamcorper amet ullamcorper primis, nam pretium suspendisse neque, a phasellus sit pulvinar vel integer.

Tractors

All makes — John Deere, Case IH, New Holland, Massey Ferguson, Fendt, Deutz-Fahr and more.

Telehandlers

Sed pede ullamcorper amet ullamcorper primis, nam pretium suspendisse neque, a phasellus sit pulvinar vel integer.

Forklifts

Yard and warehouse forklifts tuned for smoother, more responsive load handling.

Diggers & Excavators

Faster cycle times and better hydraulic response for groundworks and plant hire fleets.

Combines & Balers

Squeeze more throughput out of tight harvest windows without pushing the engine past its limits.

Generators & Static Plant

Compressors, gensets and pumps — remapped for efficiency under continuous load.
The Process

Five steps. One visit. No downtime you didn't plan for.

STEP 01

Book Your Slot

Call or message us with your machine's make, model and what you're after. We quote before we turn a wheel.

STEP 02

We Come To You

Our mobile rig arrives at your farm, yard or site — anywhere across South & West Wales.

STEP 03

Full Diagnostics

We read the ECU, check for existing fault codes and confirm the machine is fit to tune before touching anything.

STEP 04

The Remap

Fuelling, boost and timing maps are rewritten specifically for your engine and how it's worked.

STEP 05

Test & Handover

We road/field test the machine, back-check the maps, and talk you through what's changed.

READY?

Get Booked In

Most farm and plant remaps are completed in half a day, on-site.

Book Now
Beyond Performance

Not every visit is about more power

A lot of what we do is fixing what's already gone wrong. Warning lights, limp mode and recurring fault codes cost you working hours — we diagnose the real cause and put it right, on-site.

ADBLUE / SCR

AdBlue Solutions

Persistent AdBlue faults, dosing errors and countdown warnings resolved, so a tank problem doesn't cost you a day's work.

EMISSIONS

DPF Solutions

Blocked filters, failed regenerations and repeat DPF fault codes diagnosed and resolved so machinery stays working, not parked up.

EMISSIONS

EGR Solutions

Sticking or faulty EGR valves causing rough running, power loss or fault codes — diagnosed and resolved at the source.

DIAGNOSTICS

Fault Code Diagnosis

Full ECU diagnostic scan on-site to pin down exactly what's triggering a warning light or power reduction — before we recommend anything.

SENSORS

Sensor & Actuator Faults

Faulty sensors and actuators properly identified and addressed — not just cleared and left to trigger again next week.

LIMP MODE

Limp Mode Recovery

Machine stuck in limp mode? We find the root cause and get full power safely restored.

Book a Diagnostic
Why WCH Tuning

Farmers and plant operators don't get second chances on downtime.

We understand that agricultural and plant machinery isn't a hobby car — it's a working asset. Every tune we write respects the load cycles, duty hours and reliability your business depends on.

Genuinely Mobile

We bring the full workshop to you — no trailering machinery off-site and no waiting for a slot at a garage.

Agricultural & Plant Specialists

Not a car-tuner doing tractors on the side — this is our core work, on engines built for hard, continuous use.

Safe, Reversible Tuning

Every original map is backed up. If you ever need to revert, we can put it back exactly as it was.

Straight-Talking Quotes

One price, agreed before we arrive. No surprise add-ons once we're stood in your yard.

In Their Words

From farms and sites across the region

★★★★★

"Noticeable difference pulling the plough on our heavy ground. Turned up on time and had us back working by lunch."

— Dairy Farmer, Carmarthenshire
★★★★★

"Our telehandler feels like a different machine under load. Worth every penny for the lift alone."

— Plant Hire Operator, Swansea
★★★★★

"Explained everything clearly, no pressure to go bigger than we needed. Fuel use is down noticeably on the digger."

— Groundworks Contractor, Pembrokeshire
Coverage

Mobile across South & West Wales

If you're within reach of these areas, we'll come to you. Based further afield? Get in touch — we regularly travel beyond our core patch for the right job.

Cardiff Newport Bristol Bridgend Merthyr Tydfil Pontypridd Aberdare Caerphilly Barry Cwmbran Blackwood Ebbw Vale Abergavenny Ross-on-Wye West Wales Swansea Neath Port Talbot Llanelli Carmarthen Haverfordwest
Map showing WCH Tuning's mobile coverage across South and West Wales
Questions

Before you book

Manufacturer warranty terms vary by make and age of machine. We'll talk you through exactly what applies to your equipment before any work starts, and every original map is backed up so a tune can be reversed if ever needed.

Most agricultural and plant remaps, including diagnostics and a full test, take between 1 and 3 hours depending on the machine and ECU type. We'll give you a realistic time estimate at the point of quoting.

Yes. Tunes are built with duty cycle in mind, not just peak numbers. We assess the condition and use of each machine before recommending a stage, and will advise against tuning if a machine isn't in a fit state for it.

In most cases, yes. Compatibility depends on the ECU fitted rather than the age of the machine alone. Send us the make, model and year and we'll confirm quickly whether a remap is possible.

Get in touch anyway. We regularly travel further for farms and plant fleets outside our core coverage area — just ask when you enquire.

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