The 2009 Audi A6 C6 with a 3.0 TDI engine, automatic transmission and quattro was tested on a 4WD dyno. The car arrived at AutoChip already tuned, and its owner did not know what output the existing file produced.

The first dyno run with the existing software recorded approximately 306 hp and 568 Nm. After the file was analysed, it was revised with the main focus on torque. Repeat runs produced around 321–322 hp and 609 Nm.

This example shows why driving feel alone cannot provide a precise power figure. Dyno testing made it possible to compare the car before and after the new software instead of relying only on its previous tune.