If you've fitted a freer intake, performance intercooler, decat or sports exhaust, your factory map is no longer the right file for your engine. A Stage 2 is written from scratch to match the new airflow and pressure characteristics — unlocking the gains your parts were sold to deliver.
Hardware-matched files · 5+ years tuning · Road & data verified · Mobile across South Wales
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What this service is
What it is
A Stage 2 remap is a custom ECU calibration written for a vehicle running supporting performance hardware — typically a free-flowing intake, larger intercooler, sports cat or decat exhaust, and sometimes a higher-flow turbo inlet. The file accounts for the new airflow, pressure and exhaust back-pressure characteristics that your standard map wasn't written for.
Who it's for
Performance hatches, fast saloons, hot diesels, modified 4x4s and project cars across South Wales. If you've spent money on parts, you owe it to the build to have the software match.
When you need it
Once the supporting hardware is fitted, fully bedded in and the engine is healthy. A Stage 2 on top of unfinished or mismatched mods is wasted money.
Why professional matters
Bolt-on parts without a remap rarely deliver their advertised gains. The ECU is still asking the engine to behave as if it has a restrictive intake and small intercooler — so it never opens the boost or fuelling envelope your new parts can support.
What it costs to ignore it
Stage 2 is where most cowboy remaps cause real damage. The temptation to 'just turn it up' on top of new parts wrecks turbos, melts pistons and grenades clutches every weekend.
Our process
Every stage 2 remap job follows the same disciplined sequence — so the result is predictable, repeatable and guaranteed.
We list every modification, check fitment, then run diagnostics and live data.
Stock file read and stored safely before any change is made.
Boost, fuelling, ignition (petrol) and torque limiters calibrated around your hardware.
Multiple road data pulls with logging. File refined until lambda, boost, EGT and rail pressure are spot on.
Documentation, gain summary, and revisions covered for future hardware tweaks on the same car.
What you actually get
Stage 2 unlocks the headroom your hardware was sold to deliver.
Where most Stage 2 cars feel transformed — relentless mid-range pull.
Calibrated lambda and rail pressure so EGTs stay safe even under load.
Pedal map and shift points refined for the new power band.
A proper file means your intake, intercooler and exhaust earn their keep without abusing the engine.
Add a part later? Your file gets updated, not rewritten from scratch.
The detail
Stage 2 is not a bigger Stage 1 — it's a different conversation entirely. Here's how we approach it.
Cold-air or panel intake (depending on engine), uprated front-mount intercooler, high-flow sports cat or 200-cell downpipe, larger intake pipework where applicable, and on high-torque diesels a clutch capable of holding the new torque (e.g. SACHS organic or Helix for VAG TDI builds).
Boost targets raised in line with the intercooler's capacity to keep IATs safe. Fuelling rebalanced for the new exhaust back-pressure (diesel) or freer breathing (petrol). VNT/waste-gate control retuned to avoid boost spikes. Torque limiters raised gear-by-gear to suit the clutch and gearbox. Ignition advance (petrol) optimised within the knock window for UK 99 RON.
Diesel: requested vs actual boost, MAF g/s, fuel rail pressure under load, EGT (where sensor fitted), DPF differential pressure. Petrol: lambda short and long-term trims, knock counter, ignition retard events, charge air temp, MAF/MAP correlation. Every Stage 2 leaves with these logs reviewed and signed off.
Stage 2 is bolt-on hardware. The moment you fit a hybrid turbo, larger injectors, methanol injection or a built bottom end, you're into custom hybrid mapping — a separate conversation with a separate quote. We'll tell you honestly when you've crossed that line.
Most Stage 2 work is done at your premises. For complex builds requiring dyno verification, we can arrange dyno time at a partner facility in Maidenhead or Leeds.
Where we cover
Mobile to your driveway, workplace, yard or farm — anywhere in South Wales.
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5+ years remapping · Original file backed up · 100% reversible · Mobile across South Wales
