ECUHELP KT200 ECU Programmer has been successfully tested for reading and writing the VW MED 9.1 ECU via OBD. This tool is effective for most operations, allowing for smooth and reliable OBD procedures.

Successful OBD Operation
Numerous successful operations have been performed using the KT200 via OBD, proving its reliability. The process typically runs smoothly, as demonstrated in the image showing a successful write operation on a MED 9.1 ECU.

Bench Mode: A Safer Alternative
While OBD operations are generally reliable, it’s important to note that bench mode offers a safer alternative. If something goes wrong during an OBD operation, it can result in a bricked ECU. However, when working on a bench, recovery is often possible, reducing the risk of permanent damage.

Conclusion
KT200 ECU Programmer is a powerful tool for reading and writing the VW MED 9.1 ECU via OBD. However, for critical tasks or when maximum safety is required, bench mode is recommended to minimize the risk of failure.