This 2001 Audi A6 2.7T with a biturbo petrol engine and ME7.5 ECU was fitted with an LPG system. The initial petrol dyno run produced 217 hp and 306 Nm. Testing on LPG showed about 209 hp and 303 Nm, a small difference from the petrol reading.

Engine software calibration

After the engine software was calibrated, the video gives figures of approximately 267 hp and nearly 500 Nm. These figures describe the tuned engine; separate post-calibration results for each fuel are not clearly distinguished. The LPG system had its own control unit, injectors and reducer.

The video also mentions servicing the spark plugs and LPG filters. These maintenance items matter to system operation, so the result should not be attributed to a single component alone.