You can find the chip tuning file for your BMW M3 E46 - 1998 - 2005 M3 343hp 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 M3 E46 - 1998 - 2005 M3 343hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 343 HP to 365 HP, 365 Torque to 390 Torque.