The TurboXS catback is a perfect complement to our Cold Air Intake (WS08-CAI). Once you have opened up the airway for your beast to breathe you have to improve the way to the exhaust gases escape. What better way to do so than with our stainless Steel 3 inch mandrel bent catback system? We had our engineers start from scratch on a new muffler specifically for the 2008 that flows very well and does a great job of making the WRX sound it.