You can request for a Tuning Calibration for your Audi A6 C5 - 1997 - 2004 2.5 TDI 163hp vehicle on our file service site.
These Tuning Calibrations always made in real time suited to your needs and cars maximum ability.
All our Tuning files are made with maximum precision and care to be efficient.
In this particular case, we can increase the power of your engine from 163 HP to 190 HP, 350 Torque to 390 Torque within a Stage1 Calibration package.