High smoke output

This Audi with a 2.0 TDI engine had high smoke readings and visible black smoke. The workshop reviewed the vehicle’s software and found that the previously installed file had not been calibrated properly. DPF and EGR operation had already been changed before this visit, and the filter was empty or removed.

ECU software correction

The technicians reviewed and corrected the file without increasing engine power. They also adjusted the hot-start function, while leaving the DPF and EGR settings consistent with the vehicle’s existing configuration.

Smoke test after the work

After the software was written, the smoke analyser showed readings of 1.68 and 1.62. A small puff of smoke was visible under full load. The video shows measurements after the correction, but does not confirm an official inspection result or that smoke emissions were completely eliminated.