Frequently Asked Technical Questions

The ECU (Engine Control Unit) controls the engine software of a vehicle. By modifying it, you can improve power, torque, or efficiency.

With a tuning tool like AutoTuner, you read the original ECU software via OBD, bench, or boot mode. After modification, the adjusted file is written back to the ECU.

• OBD: via the car’s diagnostic port (plug-in).
• Bench: remove the ECU and program it externally.
• Boot mode: deepest access, directly on the circuit board (for advanced users only).

• Master files are fully editable.
• Slave files are encrypted and can only be modified through a linked file service (like Dyno-Chiptuningfiles).

Key maps include fuel, ignition, turbo pressure, torque limiters, throttle response, speed limiters, and emission control.

Original files are provided by the vehicle manufacturer. Modified files are optimized for performance, efficiency, or features like DPF OFF.

A safe file is checked for error codes, retains all safety limits, and does not trigger limp mode or cause damage.

A checksum verifies the integrity of the ECU file. If it doesn't match, the ECU may reject the file or trigger faults. Most tools correct this automatically. We can arrange checksums as well.

Engine, turbo, or transmission damage, error codes, excessive smoke, or limp mode. That’s why it's crucial to use reliable file services.

Yes, with modified files. But note: this is illegal in many countries for road-legal vehicles.

• Torque limiters define the engine's maximum torque.
• Torque monitoring compares actual vs. expected torque. Discrepancies can trigger limp mode.

Through unusual firmware versions, checksums, or by comparing with an original file. Often, this is not visible without tools or analysis.

This map limits the vehicle’s top speed. A tuner can increase or remove this value.

Use tools that auto-correct checksums. If not, correct them manually using tuning software before writing the file. We can also handle this for you.

Overheating, irregular engine behavior, permanent error codes, or even lasting engine damage. Always work with verified files and ensure the vehicle is in good condition.

Yes, it is technically possible. However, be mindful of the environmental laws in your country or region.

Use bench or boot mode with a stable power supply. Follow the tool manufacturer’s instructions and always make a full backup of the original ECU data.

Yes, it is always possible to revert to the original software after tuning. If you safe the original file, you always can write it back into the vehicle!