Using this Nameless Performance Axleback Exhaust is straightforward. First, gather all the included hardware and gaskets. Then, replace the two factory baffled mufflers with this exhaust system. Make sure all connections are tight during installation. When using the vehicle, enjoy the improved performance and the great rumbling sound. As for maintenance, regularly check the exhaust tips for any signs of damage or rust. Since it's made of stainless steel, it's quite durable, but a simple wipe - down every now and then can keep it looking good. Also, keep in mind this is only for wagon models of the 2005 - 2009 Subaru Legacy GT.