You can request for a Tuning Calibration for your Audi A4 B6 - 2001 - 2004 2.5 TDI 155hp 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 155 HP to 190 HP, 310 Torque to 390 Torque within a Stage1 Calibration package.