In short (TL;DR)
- What it is: ECU software adapted to modified hardware (exhaust, intake, intercooler, turbocharger, injectors). It differs from Stage 1, which is done without hardware changes.
- What we do: the software work. We do not sell parts or do mechanical work.
- Price: from €160. The final price depends on the engine and the hardware.
- For what: diesel cars with modified hardware for which Stage 1 software is no longer enough.
- Limits: the clutch, gearbox, turbocharger and injectors must withstand higher torque. We discuss this before the work.
- Legal position: a power increase and hardware changes may not match the type approval and may affect insurance. We recommend informing your insurer about all modifications.
Stage 2 and Stage 3 are engine control software adapted not to the factory hardware but to modified hardware. Unlike Stage 1, the software here is created for what is really installed in your car.
Stage 1, Stage 2 and Stage 3 – the difference
| Level | Hardware | Important |
|---|---|---|
| Stage 1 | Factory hardware | The software is adapted to the factory hardware, with no mechanical changes |
| Stage 2 | Usually a modified exhaust system, intake, intercooler | The software is created for the installed hardware |
| Stage 3 | Usually a modified turbocharger, injectors and other main parts | The most complex level, with the most limits and risks |
What must be assessed before the work
- Clutch and gearbox. Higher torque loads the transmission. Automatic gearboxes (e.g. ZF 8HP, DSG) have manufacturer limits – read about them in the article on gearbox programming.
- Turbocharger and injectors. The factory turbocharger has operating limits; exceeding them shortens its life.
- DPF and EGR. These systems work according to factory logic. Deprogramming them is a separate job: DPF, EGR.
- Exhaust gas temperature and oil. More power means more load.
What we do not promise
We do not promise a specific power or torque gain in advance: it depends on the engine, the hardware and the ambient conditions. Before the work we tell you what can reasonably be expected from your engine. We do not promise lower fuel consumption either.
Price
Diesel Stage 2–3 costs from €160. The final price depends on the engine, the ECU type and the installed hardware; we give it after the discussion, before starting the work. For BMW cars see BMW Stage 2–3.
Frequently asked questions
How does Stage 2 differ from Stage 1?
Stage 1 software is adapted to factory hardware. Stage 2 is for when important parts have been changed, usually the exhaust system, intake or intercooler, and the software is created for that. Stage 3 covers even larger changes, such as the turbocharger and injectors.
Can I order Stage 2 without hardware changes?
No. Without suitable hardware, Stage 2 software makes no sense and may do harm. If the hardware is not there yet, we recommend starting with Stage 1 or discussing the choice of hardware.
How much power will you add?
We do not promise a specific number – it depends on the engine and the hardware. Before the work we tell you what gain can reasonably be expected in your engine.
Will the gearbox and clutch withstand it?
This is one of the main questions. Before the work we assess the gearbox and clutch limits and, if needed, limit the software or recommend strengthening the parts.
Can the factory software be restored?
Yes. Before the work we save the original ECU software.
Do I need to inform my insurer?
Yes, we recommend it. A power increase and hardware changes are modifications that can affect insurance and warranty.