Letting your turbo breathe easier is one of the easiest ways to increase overall power of the car. Other than the performance gains, you also achieve that pleasing exhaust note. This test pipe is made from 304 stainless steel and is a full 3 inches around. It features a high flow catalytic converter or cat which is a direct OEM replacement. This means that your car remains street legal while still being able to achieve all the performance gains. What do you have to lose?