You can find the chip tuning file for your Porsche 911 2011 - 2015 ( 991 ) 3.8i Turbo 520hp 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 Porsche 911 2011 - 2015 ( 991 ) 3.8i Turbo 520hp vehicle is the result of a special product by Hyperols Engineers. In addition, we can increase the power of your vehicle from 520 HP to 600 HP, 710 Torque to 800 Torque.