Originally Posted by ProcalX

However there are pre-designed programs out there that come with a huge database of "profiles", these profiles each contain detailed information as per each model/manufacturer/version of car, it works much like RivaTuner (the graphics card overclocking program, it can safely overclock / tune your graphics card to a better performance without changing any of the parts. and of course if u do change other parts such as making cooling better, u can push it further.

Such programs exist similarly for cars.