Mobile ECU Remapping — Taxis & Private Hire

Every mile
counts. So does
every fault.

WCH Tuning brings dyno-proven ECU remapping and fault diagnostics straight to your driveway, office or rank across South & West Wales. Lower fuel costs, smoother driving and fewer AdBlue, DPF and EGR faults — without your car sat off the road.

Get a Free Quote How It Works
We Come To You Fully Insured ULEZ / Euro 6 Safe
WCH Tuning mobile workshop van parked beside a taxi being tuned
On Your Drive. Between Shifts. Same Day.

What actually happens when we remap your car?

Taxis and private hire vehicles rack up serious mileage — often more in a year than most cars see in five. Factory tuning is a conservative average built for every market, not for a car doing eight hours a day on the road.

We connect directly to the ECU and rewrite the fuelling, boost and timing maps that govern how the engine runs — tuned around real driving, not a factory default.

No engine hardware is changed, and nothing is done to your emissions control systems. It's a software tune, done properly, by people who understand high-mileage diesel and petrol taxis.
-14%
Average Fuel Saving
+20%
Average Torque Gain
800+
Taxis & PH Vehicles Tuned
Zero
Emissions Hardware Removed
What We Tune

Every kind of taxi and PH vehicle, tuned to how it's actually driven

Saloon taxi car being tuned

Saloon Cars

Standard private hire and taxi saloons — tuned for lower fuel spend on high daily mileage.

Estate car being tuned for taxi use

Estate Cars

Extra load, extra demand on the engine — tuned to carry luggage and passengers without strain.

MPV people carrier taxi being tuned

MPVs & People Carriers

Group and airport transfer vehicles — tuned for smooth, confident performance fully loaded.

Wheelchair accessible vehicle being tuned

Wheelchair Accessible Vehicles

WAVs tuned with the extra weight of ramps and conversions properly accounted for.

Executive vehicle or black cab being tuned

Executive & Black Cabs

Premium hire and Hackney Carriage vehicles — tuned for smoothness passengers actually notice.

Airport transfer vehicle being tuned

Airport & Transfer Vehicles

Long-run motorway work — tuned for fuel economy and reliability on every transfer.

The Process

Five steps. Fitted around your shifts, not ours.

Step 01

Book Your Slot

Tell us your make, model and what you're after. We quote before we touch the car.

Step 02

We Come To You

Home, office or rank — daytime, evening or overnight, fitted around your shift pattern.

Step 03

Full Diagnostics

We scan for existing fault codes and confirm the car is fit to tune before starting.

Step 04

The Remap

Fuelling, boost and timing maps rewritten specifically for your car and how it's driven.

Step 05

Test & Handover

Road tested, maps verified, and a quick run-through of what's changed before we leave.

Ready?

Get Booked In

Most remaps are completed in under two hours — back on the road the same day.

Call WCH Tuning
Beyond Performance

Not every visit is about more power

High-mileage diesels spend a lot of time fighting AdBlue, DPF and EGR faults. Every warning light is a day of fares you can't afford to lose — we diagnose the real cause and put it right, at your door.

AdBlue / SCR

AdBlue Solutions

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

Emissions

DPF Solutions

Blocked filters, failed regenerations and repeat DPF fault codes diagnosed and resolved on-site.

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 at your door to pin down exactly what's triggering a warning light or power reduction.

Sensors

Sensor & Actuator Faults

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

Limp Mode

Limp Mode Recovery

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

Book a Diagnostic
Why WCH Tuning

Your car off the road is a day's fares gone. We get that.

Whether you're an owner-driver or run a private hire fleet, we understand your car is a working asset, not a hobby. Every tune and every fault-fix we carry out is built around keeping you earning, not just making the car quicker.

We Come To You

Full mobile workshop, day or night — no waiting for a garage slot or losing a shift to drop-off and collection.

Taxi & PH Specialists

Not a car-tuner doing the odd taxi — this is high-mileage PHV and Hackney Carriage work we do every week.

ULEZ / Euro 6 Safe

Our tunes work within your vehicle's existing emissions systems, so licensing plate conditions and ULEZ/CAZ status aren't put at risk.

Safe, Reversible Tuning

Every original map is backed up. If a tune ever needs reverting, we can put it back exactly as it was.

For Drivers & Firms

Owner-driver friendly. Fleet ready.

£

Single-Car Pricing

One clear, upfront quote whether you're tuning a single car or a whole private hire fleet.

⏱

Fitted Around Shifts

Day or night slots that work around your rota, not the other way round.

⚑

Priority Fault Callouts

Existing customers get priority booking when a car drops into limp mode unexpectedly.

✓

Multi-Vehicle Discounts

Running a fleet of private hire cars? Rates improve the more vehicles we tune for you.

Set Up an Account
In Their Words

From drivers and firms across the region

★★★★★

"Fuel savings paid for the tune within a couple of months. Turned up when I said, done in under two hours."

— Owner-Driver, Swansea
★★★★★

"Sorted a recurring AdBlue fault our garage couldn't get to the bottom of. Car's been faultless since."

— Private Hire Driver, Carmarthenshire
★★★★★

"We run six cars and WCH tune all of them now. Straightforward pricing and they work around our drivers."

— Private Hire Firm, 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

No emissions hardware is removed or altered. We work within your vehicle's existing AdBlue, DPF and EGR systems, so its Euro 6 status and ULEZ/Clean Air Zone compliance — and your licensing authority's plate conditions — are unaffected.

Remapping applies to traditional diesel and petrol engines. Hybrid and electric drivetrains work differently, so if your vehicle is part-electric or fully electric, get in touch and we'll give you an honest answer on whether there's anything we can help with.

Most remaps take under two hours, and full diagnostic and fault-fix visits are usually done within half a day. We know downtime means lost fares, so we work to get you back out as quickly as possible.

You should always check with your insurer, as some require modifications to be declared. We're happy to provide documentation of the work carried out to support that conversation.

Yes — the more vehicles in your fleet, the better the per-vehicle rate. Single cars are just as welcome, and there's no minimum fleet size to get started.

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