Category 05 / 08

Fault & Function Solutions

Permanent software fixes for annoying faults.

Category 05 · 4 services

Services in the category

ECU-side solutions for fault code management, start-stop delete, hot-start problems and issues caused by the MAF/air flow meter. A fault diagnosis is carried out before every job; if the problem is mechanical or sensor-related, we recommend a repair first. Software only comes in when the problem genuinely has a software solution.

  1. Software that permanently disables unnecessary fault codes in the ECU for removed or unused systems.

    • Get rid of a permanently lit warning light
    • Removes power restrictions caused by a fault code
    • Only the selected codes are disabled; all other monitoring keeps working
    • Petrol
    • Diesel
    • ~1 h
    Appointment
  2. A solution that permanently switches off the start-stop system that turns itself on at every start, or makes it remember your last setting.

    • No more pressing the button every time you start the car
    • Smoother, more comfortable driving in stop-and-go traffic
    • Air conditioning that keeps running when you stop
    • Petrol
    • Diesel
    • ~30 min–1 h
    Appointment
  3. A software solution for cars that are slow to start, or won't start at all, when the engine is hot, applied once the cause has been identified.

    • Starts first time with a hot engine
    • Less unnecessary load on the starter motor and battery
    • The real cause found first, with no unnecessary parts replaced
    • Petrol
    • Diesel
    • ~1–2 hours
    Appointment
  4. Software that lets the ECU run on its calculated air model instead of a faulty or problematic MAF (mass air flow) sensor.

    • Fixes air-flow-meter-related power loss and limp mode
    • Eliminates air mass fault codes
    • Fully compatible with cars that have had an EGR delete
    • Petrol
    • Diesel
    • ~1–2 hours
    Appointment

FAQ · 8 questions

Questions about faults & functions

We’ve gathered the most frequently asked questions about the services in this category.

Got an issue specific to your car?Write to us with the make, model and engine, and we’ll tell you what can be done.

Fault Code DeleteCan you disable any fault code?

Technically, many codes can be disabled; however, we don’t disable codes that indicate a real fault and affect the engine or driving safety. We find the cause first and, if a repair is needed, we tell you.

Fault Code Delete details
Fault Code DeleteWhat’s the difference between clearing the fault memory and disabling a code?

Clearing the fault memory is temporary; if the problem persists, the code soon comes back. Disabling a code is permanent, because it switches off the relevant monitoring in the software.

Fault Code Delete details
Permanent Start-Stop DeleteDoes a start-stop delete harm the battery?

No. Switching the system off doesn’t put any extra load on the battery or charging system; in fact, the number of starts goes down. The battery management system keeps working normally.

Permanent Start-Stop Delete details
Permanent Start-Stop DeleteDoes a start-stop delete increase fuel consumption?

In stop-and-go traffic, consumption may rise slightly as the savings the system provides are lost. On long journeys and in free-flowing traffic, there’s no noticeable difference.

Permanent Start-Stop Delete details
Hot Start Problem FixCan a hot start problem always be fixed with software?

No. If the problem is caused by a mechanical issue such as a leaking injector, fuel pump, sensor or starter motor, it needs repairing first. Software is a permanent fix for calibration-related problems; we find out which it is through diagnostics.

Hot Start Problem Fix details
Hot Start Problem FixShould I bring the car in with the engine hot for diagnosis?

If possible, yes; arriving with the engine at operating temperature speeds up diagnosis. We also warm the car up at the workshop and observe the problem with live data.

Hot Start Problem Fix details
MAF/Air Flow Meter DeleteI’ve had a sport air filter fitted — do I need a MAF delete?

Usually not. With an intake kit designed for the specific vehicle, the air flow meter stays in the right position and at the right diameter, so measurement remains accurate. Where the diameter changes, the software can be rescaled instead of deleting the sensor.

MAF/Air Flow Meter Delete details
MAF/Air Flow Meter DeleteCan a MAF delete be done on petrol cars?

It’s possible on some petrol cars, but not every ECU is suited to it. We assess suitability based on the engine and ECU type; on most petrol cars, running with a healthy air flow meter gives a better result.

MAF/Air Flow Meter Delete details

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