When it's time to replace the factory air filter in your car, everyone knows that you should replace it with a K&N Air Filter. This is a direct drop-in filter that traps the smallest of microns to allow your engine to breathe better under idling, or boost. Pretty sure special aliens work for K&N because their filter technology is beyond most comprehension. However, once you get this filter installed then you can enjoy the benefits of improved throttle response, and more horsepower and torque. And if you're worried about replacing the filter, you can simply wash it and service again for further use. Pretty amazing stuff right?