This Audi A4 B7 2.0 TDI had previously been tuned at two workshops. Although the car produced around 220 hp and 415 Nm with the existing file, it hesitated under load and did not run smoothly.

Analysis of the ECU file found unsuitable changes to control data, including boost pressure and temperature readings. The file was revised and written back. During the follow-up check, the hesitation was no longer present and the car accelerated more smoothly.

The video title lists 205 hp and 425 Nm, but the spoken section does not give final dyno figures after the file correction. This article therefore focuses on the software correction and smoother operation rather than an unconfirmed final measurement.