For unbeatable selection on performance chips you will have to purchase Scion XD chips. There is no other chip as powerful as the scion XD chips; they will add more horse power to your vehicle making it accelerate faster. With these chips on your engine expect more torque out put and better fuel mileage. You will end up enjoying the best gas mileage that will enable you to drive for long distance without checking the tank.XD chips are the longer lasting chips and can last for as long as your vehicle does. These chips work with the existing parts of the car and the engine so as to produce an excellent result. They are available in wide variety and at fair price that can’t make you strain financially. These chips are super easy to install for you only need a couple of minutes and a few hand tools.