engine of car

the program based on the machine fake if the i change some thing in my car before i change it i input some value in the program then the program give me a result - if the input i input it in the program at the range of the machine of the car then the result will be "you can change " - else if the input i input it in the program out of the range and will broke the the engine of the machine the result will be "you can not change "