After the engine swap

This BMW had its 2.0 engine replaced with a 3.0 diesel. The conversion had been registered and approved, and a new, upgraded intercooler had been installed. After the engine swap, the workshop checked the power output and adjusted the ECU software.

Dyno runs and data logging

The first dyno run produced approximately 255 hp and 585 Nm, but power dropped at higher load. The team therefore logged engine data, paying particular attention to fuel rail pressure. They then prepared and tested another software version.

What the repeat test showed

The second dyno run recorded 248 hp and 569 Nm. Data analysis showed a mismatch between requested and actual rail pressure. Injectors or the pressure sensor were mentioned as possible causes, but the video does not confirm a specific fault. The owner was informed that these systems needed checking; no repair is shown.

The 310–320 hp and approximately 650 Nm mentioned in the video are a possible target after the issue is resolved, not a result that was achieved or verified.