You can find the chip tuning file for your Audi S4 B6 - 2001 - 2004 4.2 V8 344hp vehicle on our site. These files are created especially for you and handed to you. All our Tuning files are extensively tested on Dynometer. The development of the tuning file for your Audi S4 B6 - 2001 - 2004 4.2 V8 344hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 344 HP to 364 HP, 410 Torque to 440 Torque.