Our Scion catalytic converter is equipped with special metallic elements that attract and trap more toxic particles than regular stock converters. That Scion catalytic upgrade not only makes your car greener, but it also decreases back pressure in the exhaust system, leading to a major boost in horsepower and allover engine efficiency. Custom designed for your specific make and model, our Scion catalytic converters are available in your choice of California emission standards or the 49-state standard. In addition to top quality, our 1-year lower price guarantee ensures that AutoAnything offers you the best deal around.