Tuned your way.
Performance or
Economy.
WCH Tuning brings dyno-proven ECU remapping, diagnostics and fault-fixing straight to your driveway across South & West Wales. Chase more power, cut your fuel bills, or both — it's your car, your call.
Performance
Chase the numbers. More power, sharper throttle response, and a car that feels genuinely different to drive.
- Increased power & torque
- Sharper throttle response
- Optional extras — pops & bangs, launch control & more
Economy
Lower running costs without losing what makes the car yours to drive every day.
- Reduced fuel consumption
- Smoother, more relaxed delivery
- Ideal for high-mileage daily drivers
+30%
-15%
1,200+
8
Take it further
On top of a Stage 1 remap, these are the extras enthusiasts ask for most. We'll talk you through what's suitable for your car, and what's road-legal versus track/private-road only.
Speed Limiter / VMAX Delete
Removes the factory-set top speed limiter for track and private road use, unlocking your car's true top-end.
Pops & Bangs
Aggressive overrun crackle and pop tuned into the exhaust note on throttle lift-off.
Launch Control
Consistent, repeatable launches from a standing start, holding optimum revs for the cleanest getaway.
Hard Cut / Popcorn Limiter
An aggressive ignition-cut rev limiter for a sharper, more theatrical hit at redline.
Auto / DSG Gearbox Tuning
Faster, firmer shifts and remapped shift points for automatic and dual-clutch gearboxes.
Rev Limit Increase
A raised rev ceiling to make the most of your engine's natural power delivery, where it's safe to do so.
Some options are intended for track or private road use — we'll always advise you honestly on road legality and insurance implications before any work is carried out.
Five steps. One driveway visit.
Book Your Slot
Tell us your make, model and what you're after. We quote before we touch the car.
We Come To You
Home or work, anywhere across South & West Wales — no driving to a workshop.
Full Diagnostics
We scan for existing fault codes and confirm the car is fit to tune before starting.
The Remap
Fuelling, boost and timing maps rewritten to your chosen path — Performance, Economy, or both.
Test & Handover
Road tested, maps verified, and a quick run-through of what's changed before we leave.
Not just remaps — the full diagnostic toolbox
Most of these are big enough topics to get their own dedicated page — this is the short version of everything we can sort in one mobile visit.
Fault Code Diagnosis
Full ECU scan to pinpoint exactly what's wrong before we recommend anything.
AdBlue Solutions
Persistent AdBlue faults and dosing errors resolved.
DPF Solutions
Blocked filters and failed regenerations diagnosed and resolved.
EGR Solutions
Sticking or faulty EGR valves diagnosed and resolved at the source.
Key Coding
Lost, spare or replacement keys coded to your vehicle on-site.
Lambda / O2 Sensor
Faulty oxygen sensor faults diagnosed for smoother running and accurate fuelling.
Immobiliser Solutions
Immobiliser faults diagnosed and reset, getting you back on the road.
Mileage Correction
Accurately recalibrating displayed mileage to match your vehicle's true recorded mileage — typically needed after a cluster, ECU or gearbox replacement.
One car, tuned exactly how you actually drive it.
Not every car needs the same tune, and not every driver wants the same thing from it. We build every remap around your car and how you use it — daily driver, weekend toy, or both.
Genuinely Mobile
We bring the full workshop to your driveway — no dropping the car off and waiting for a garage slot.
Petrol & Diesel Specialists
From hot hatches to high-mileage diesels, tuning is what we do every day, not a side line.
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 on your driveway.
From daily drivers to weekend enthusiasts
"Stage 1 transformed the car. Sharper throttle, more pull everywhere — exactly what I wanted, nothing over the top."
"Went for the economy tune on my commuter diesel. Fuel gauge lasts noticeably longer on the same run."
"Added the pops and bangs package on top of Stage 1. Sounds incredible without being silly on the road."
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.
