NP22 areas we cover most weeks
Tredegar town centre, Georgetown, Cefn Golau, Sirhowy, Dukestown, Rassau, Peacehaven, Glyn-helyg. All NP22 served without a travel fee.
Mon–Sat 9am – 8pm · Closed Sunday
Blaenau Gwent · NP22
ECU Remapping in
ECU Remapping in
Tredegar — straight along the Heads of the Valleys.
Tredegar is fifteen minutes east of us on the A465. From Dukestown and Sirhowy down to Georgetown and Cefn Golau, we'll turn up with the kit and have you sorted on the kerb.
15 minutes from Merthyr · NP22 covered · No callout fee
Free, no-obligation quote
Get a price in Tredegar
Reply within working hours · Same-day quotes
Local to Tredegar
Why we know Tredegar inside-out.
Tredegar sits at the top of the Sirhowy valley, and the A465 puts it inside fifteen minutes of our Trefechan workshop. That short hop means NP22 customers get treated almost identically to Merthyr ones — quick lead times, flexible booking windows, and the same diagnostic-first approach that the home-town diary gets.
Tredegar driving is mostly steep. The drop down to the town clock, the climb back out toward Rassau, and the long pull on the A465 itself — all of that loads a diesel turbo in ways the factory ECU map wasn't really designed for. We see plenty of cars that feel sluggish low down and only wake up at 2,800 rpm. A reshaped low-end calibration sorts exactly that.
Response time
Most NP22 jobs are booked within 3–5 working days. Urgent diagnostic or engine-light work is often same-day or next-day.
Properties we work at
Long terraced rows through Tredegar town and Georgetown, post-war estate housing in Sirhowy and Cefn Golau, scattered farms above Dukestown, plus the Rassau industrial estate at the top of the valley.
Most common service needs
Stage 1 economy remaps on diesel commuters heading down the A465 toward Newport, van tuning for trade fleets at Rassau industrial estate, plus EGR and DPF diagnostics on short-trip town vehicles.
Where we're based
35 The Birch Way, Trefechan, Merthyr Tydfil CF48 2HA — About 15 minutes east of Merthyr along the A465 Heads of the Valleys.
Services available in Tredegar
Everything we tune, calibrate and diagnose in Tredegar.
Every service below is delivered mobile to your Tredegar driveway, workplace or yard — same workshop-grade kit, same calibration files, no compromise.
ECU Remapping in Tredegar
Custom-tuned ECU files for power, economy or both.
Learn moreStage 1 Remap in Tredegar
Bolt-on power & torque gains on a standard engine.
Learn moreStage 2 Remap in Tredegar
Calibrated for hardware upgrades — intake, exhaust, intercooler.
Learn moreECU Diagnostics in Tredegar
Full fault-code reads, live data and root-cause diagnosis.
Learn moreECU Tuning in Tredegar
File optimisation for response, smoothness and fuel return.
Learn moreEngine Light Removal in Tredegar
Diagnose, fix and clear stubborn warning lights — properly.
Learn moreTruck Remapping in Tredegar
HGV & LCV tuning for torque, MPG and driveability.
Learn moreTractor Remapping in Tredegar
Agricultural ECU tuning — more pulling power, less fuel.
Learn morePlant, ATV & Bike Remapping in Tredegar
Quads, buggies, motorbikes and plant machinery.
Learn moreWhy customers in Tredegar pick us
Concrete trust signals — not marketing fluff.
15 min
From our workshop
Straight along the A465. NP22 is close enough that we'll often pair it with a Merthyr day.
NP22
Whole borough on the route
Tredegar town, Sirhowy, Georgetown, Dukestown, Cefn Golau, Rassau — covered with no separate fee.
Diagnostic first
Never just clear codes
Engine-light work always starts with a proper scan, live data and adaptation read — not a quick wipe and hope.
Lifetime
Software support
Every file is backed by lifetime software support — if something changes, we'll sort it.
Problems we see in Tredegar
The local conditions that wreck a stock map.
Generic maps don't account for Tredegar's specific mix of roads, climate, property types and vehicles. These are the issues we diagnose and fix here every week.
Long A465 commute wear
Daily runs down to Newport or Cardiff cycle DPFs and EGRs hard. We diagnose actual condition first — never write a file on top of an unknown fault.
Steep Sirhowy climbs exposing stock turbo lag
The pull back up from town to Rassau makes flat-spots obvious. A reshaped torque curve fixes the gear-hunting without changing peak figures.
Rassau yard vans on heavy duty cycles
Trade vans operating out of Rassau industrial estate do harder mileage than the factory map assumes. Custom fuelling restores MPG.
Older trade fleet diesels with patched history
Plenty of NP22 Vivaros and Transits come to us with previous quick-fix attempts. We test from cold and rebuild a clean baseline before any tune.
Our process in Tredegar
Every Tredegar job runs the same disciplined sequence.
The same five steps, in the same order, every single time. Predictable, repeatable, fully reversible.
- 1
Free quote by reg
Send your registration and what you're after. We come back — typically within 24 hours — with a price and the next available slot in Tredegar. Price is confirmed once we know the exact vehicle and location.
- 2
Pre-tune diagnostic
On arrival we read fault codes, live data and adaptations. If something's wrong, we tell you before any file change.
- 3
Back up factory file
Original calibration stored against ECU serial, date and mileage — so the vehicle is always recoverable.
- 4
Write tested calibration
We load a calibration tested on the exact engine/gearbox combo — not a generic shared map.
- 5
Road-test & hand back
Short controlled road-test on the nearest A-road, post-tune scan, and the keys back in under 90 minutes.
The detail
Tredegar coverage, vehicle profiles and local context.
Tredegar is on the same A465 corridor as our workshop, so it's effectively a home-market town. The lead times, flexibility and diagnostic standard match what Merthyr customers get.
Why mobile remapping suits Tredegar
Most jobs happen on the customer's kerb in 60–90 minutes. No half-day drive to Newport or Cardiff, no courtesy car, no taxi back.
Vehicle profiles in NP22
Strong diesel commuter contingent, big presence of Transit and Sprinter trade vans, plenty of older Defenders and pickups on the rural fringe above Dukestown, plus a growing pool of Mercedes and BMW estates.
FAQ — Tredegar
Straight answers about remapping in Tredegar.
Anything not covered here? Call Gavin on 07863 791632.
Nearby areas we cover
Also covering the towns around Tredegar.
Ready to book your remap in Tredegar?
Send your reg and what you're after — we'll come back the same day with an exact price and the next available Tredegar slot.
5+ years remapping · Original file backed up · 100% reversible · Mobile across Blaenau Gwent