All Services

Tuning, diagnostics
and fault repair —
all in one visit.

Everything WCH Tuning does, in one place. Whether you know exactly what's wrong or just know something isn't right, we bring the full mobile workshop to you across South & West Wales.

Call WCH Tuning Not Sure What You Need?
Mobile — We Come To You Fully Insured 10 Services, One Visit
WCH Tuning mobile workshop van with diagnostic and tuning equipment laid out
One Visit. Every Service.
South & West Wales Coverage
15+ Years Experience
All Major Manufacturers
Straight-Talking Quotes
Tuning

Get more from your engine

Performance ›

Performance Tuning

Stage 1, Stage 2, and advanced extras like launch control, pops & bangs and DSG tuning.
Economy ›

Economy Tuning

A dedicated fuel-saving remap, built for high-mileage daily drivers and business mileage.
Diagnostics & Emissions

Find the real fault, fix it properly

Start Here ›

Full Diagnostics

A complete ECU fault scan to pinpoint exactly what's wrong before anything's recommended.
Emissions ›

AdBlue Solutions

Dosing errors, sensor faults and countdown warnings diagnosed and repaired.
Emissions ›

DPF Solutions

Blocked filters and failed regenerations diagnosed, cleaned and resolved.
Emissions ›

EGR Solutions

Sticking or faulty EGR valves diagnosed and resolved at the source.
Sensors ›

Lambda / O2 Sensor

Faulty oxygen sensors diagnosed for smoother running and accurate fuelling.
Keys, Security & Instrumentation

Locked out, stranded, or showing the wrong number?

Keys ›

Key Coding

Lost, spare or replacement keys coded to your vehicle on-site, same day in most cases.
Security ›

Immobiliser Solutions

Won't start with the right key? We diagnose and repair the fault properly.
Instrumentation ›

Mileage Correction

Recalibrating displayed mileage after a cluster, ECU or gearbox replacement.
Not Sure What's Wrong?

Start from the symptom, we'll point you the right way

Warning Light On ›

Full Diagnostics

Any dashboard warning, unexplained fault, or "just doesn't feel right" — start here.
Won't Start ›

Key Coding or Immobiliser

Lost your only key, or the car won't recognise the one you have? Start with either service.
AdBlue Message ›

AdBlue Solutions

Countdown warning or engine start limitation message on a diesel? This is the one.
Poor Fuel Economy ›

Economy Tuning or Lambda Check

MPG dropped off recently? Could be a sensor fault, or simply time for an economy tune.
Browse By Vehicle

Looking for a specific type of vehicle instead?

Cars

Vans & Campervans

HGVs

Buses & Coaches

Taxi & Private Hire

Plant & Agricultural
Why WCH Tuning

One visit, sorted properly.

Most faults we diagnose can be fixed in the same visit, and most tuning jobs are done in under two hours. We bring the full workshop to you, so you're not juggling multiple garage bookings for related problems.

Genuinely Mobile

Home, work, depot or roadside — anywhere across South & West Wales, no towing required.

All Major Manufacturers

Cars, vans, campervans, HGVs, buses, taxis and plant machinery — all covered.

Straight-Talking Diagnosis

A clear explanation of what's wrong before any work starts, with no pressure to over-spend.

One Visit, Multiple Fixes

Diagnosed a fault and want a tune while we're there? Most jobs can be combined in a single visit.

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

Start with Full Diagnostics if you're unsure. A complete fault scan will identify the real issue, and we can carry out most repairs in the same visit rather than needing a second booking.

Yes — most customers combine a diagnostic scan with whatever repair is needed, and many add a performance or economy tune while we're already there. Let us know everything you'd like looked at when you book.

Yes — vans, campervans, HGVs, buses and coaches, taxis and private hire vehicles, and agricultural and plant machinery are all covered. See our vehicle-specific pages for details relevant to each.

It depends on the service and your vehicle. We'll always give you a clear, upfront quote before any work starts — call us with your make, model and what's wrong and we'll talk you through it.

Availability varies, but we offer same-day visits for urgent issues like a car that won't start wherever possible. Get in touch and we'll confirm the soonest slot we have.

Optimised Performance

Unlock your vehicle's performance. WCH Tuning 
Contact us
Get a Quote
Search