You can find the chip tuning file for your BMW 6 serie E63 - 2004 - 2010 635D 306hp 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 BMW 6 serie E63 - 2004 - 2010 635D 306hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 306 HP to 340 HP, 600 Torque to 680 Torque.