I just installed cobb. the install took about 15 minutes. you simply plug de obd port, and follow the instructions. you start seeing a bunch of symbols on the dash and after a little sweat on this 85 degress puerto Rico weather your done. i put the stage 1 agressive, despite having only 91 oct fuel (shell) and went for a drive. I was not sure if i needed to put the transmission on drive or sport or manual so i choose sport mode. you could definitely feel the added torque, my wheels went spining at the begining. i think is a nice upgrade from stocck. i only have berk race exhause as mod. i need to play with the device a little bit more, and i know i have to be careful cause i have only 91 octanes. tomorrow ill go for a longer drive, so lets see how it goes.