Using this exhaust tip is easy. First, make sure your car is the right model (2002 - 2007 Subaru WRX or 2004 - 2007 Subaru STI). Then, remove the old exhaust tip. Slide the new 3' slip - joint inlet of the exhaust tip onto the exhaust pipe and secure it with the included clamp. When driving, avoid hitting the exhaust tip on curbs or other obstacles. For maintenance, regularly clean the exhaust tip with a mild soap and water solution. This will keep the brushed'matte' finish looking great and prevent dirt build - up on the laser - etched COBB Logo.