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Nationwide Mobile Service
Mobile ECU remapping service in Llanelli - M17 Performance

ECU Remapping Llanelli

Professional mobile ECU remapping throughout Llanelli and South West Wales

Llanelli ECU Remapping

Mobile ECU Remapping Services in Llanelli

Looking for professional ECU remapping in Llanelli? M17 Performance brings expert mobile tuning to this Carmarthenshire coastal town.

We Come To You

Home, office, or any convenient location across Llanelli

Flexible Scheduling

Appointments available 7 days a week to suit your schedule

Areas We Cover Near Llanelli

Llanelli
Burry Port
Kidwelly
Trimsaran
Pembrey
Bynea
Llangennech
Felinfoel
Dafen
Swiss Valley

Local Insight

Llanelli's M4 commuters heading east to Swansea and the rural West Wales roads to Carmarthen make our remaps popular — economy tunes for the motorway and extra torque for the hilly coastal routes.

Our Services

Coastal driving around Llanelli involves a mix of exposed trunk roads and winding single carriageways where overtaking opportunities are limited. Our Stage 1 calibrations deliver up to 35% more power with improved mid-range torque, giving you the confidence to make the most of short passing opportunities. The denser sea-level air around South West Wales's coast means turbocharged engines respond exceptionally well to our calibrations.

The frequent speed transitions between Llanelli's local roads and the M4, A484, A476 put real demands on automatic and DSG gearboxes. Our calibrations deliver faster, more decisive shifts for motorway merging, reduced kickdown hesitation during overtakes, and smoother cruise-speed gear holding — making the daily commute across South West Wales far less tiring.

Whether commuting from Llanelli along the M4, A484, A476 or covering miles across South West Wales, our economy calibrations deliver genuine fuel savings of 10-15%. We optimise fuel injection timing, boost pressure, and torque delivery for the speeds you actually drive at — not just peak-power figures you'll never use. The result is a vehicle that's more efficient without feeling slower.

The mix of slow coastal-road driving and seasonal traffic congestion around Llanelli can prevent DPF regeneration, while South West Wales's humid climate can accelerate moisture-related EGR issues. We diagnose whether your warning light is caused by soot overloading, sensor failure, or carbon buildup, and apply professional software solutions at your location — no need to drive to a distant dealer.

The salt-laden coastal atmosphere around Llanelli can accelerate corrosion of AdBlue system components, while temperature fluctuations near the coast contribute to crystallised injectors and frozen tank heaters in winter. We diagnose NOx sensor failures, dosing module faults, and SCR efficiency issues on modern diesels at your home or workplace anywhere along the South West Wales coast.

Nearby Areas in South West Wales

Swansea Neath Port Talbot Bridgend

Brands We Service

We tune / remap all major vehicle manufacturers. Click a brand for detailed information:

Audi

TFSI & TDI tuning

Volkswagen

TSI & DSG specialists

BMW

B47, N55, N57 experts

Mercedes

AMG & BlueTEC tuning

Jaguar

Ingenium specialists

Land Rover

Defender to Range Rover

Ford

EcoBoost & TDCi

Vauxhall

CDTi & VXR tuning

Skoda

vRS specialists

SEAT

Cupra & FR tuning

MINI

Cooper S & JCW

Renault

dCi & RS tuning

Citroen

BlueHDi specialists

Kia

CRDi & GT tuning

Mazda

SkyActiv tuning

DS

Premium French tuning

Book Your Llanelli Remap

Ready to transform your vehicle's performance? Get in touch for a free, no-obligation quote.

Get Free Quote 07807 861919

Why Choose M17 Performance?

  • Nationwide mobile service
  • 16,500+ vehicles tuned
  • Custom tailored remaps

Ready to Transform Your Vehicle?

Get your free, no-obligation quote for ECU remapping in Llanelli today.

Get Free Quote 07807 861919