You might not be able to pull this off safely and stay in budget, but if you have a car that is popular for turbocharging or supercharging, there's a likelihood that you can get some easy horsepower out of a well-designed kit. Just remember, if it seems too good to be true, it probably is. Some shady tuners will get really high power figures for very little money, but it's only because they haven't bothered to update any parts of the engine that will be under greater stress, which will lead to engine failure.

Do your research on your particular make and model before shelling out at least $3,000 for some more horses.