You can find the chip tuning file for your Lexus GS 2005 - 2012 300 250hp 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 Lexus GS 2005 - 2012 300 250hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 250 HP to 270 HP, 310 Torque to 330 Torque.