You can find the chip tuning file for your Porsche Boxster 2005 - 2011 ( 987 ) 2.9i 256hp 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 Boxster 2005 - 2011 ( 987 ) 2.9i 256hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 256 HP to 275 HP, 290 Torque to 310 Torque.