dont use them chip craps, they 1 void your waranty, 2 they are not safe or good for the newer cars because its basicly telling the computer a lie to make it do somthing else and this can end up effecting other parts of the computer/car as well. Its not worth it... ontop of which you wont get more then 1-5hp gain MAX off that chip, lol... If somthing so cheap could help 10-15hp dont you think EVERYONE would use it instead of spending $100's? lol