Using this exhaust system is straightforward. First, gather all the included parts: the exhaust manifold, up pipe, turbo gaskets, exhaust wrap, and hardware kits. Install the exhaust manifold and up pipe according to your vehicle's specifications, making sure to use the provided gaskets and hardware for a proper fit. Wrap the 50' x 2in exhaust wrap around the pipes as needed to reduce heat. When it comes to maintenance, regularly check the connections to ensure they are tight and there is no air leakage. Look for any signs of rust or damage on the stainless - steel parts. If you notice any issues, replace the damaged components promptly. Also, keep in mind the special requirements for different model years. Some 2002 - 2005 WRX models may need a 2.5l STI oil pan, and 2006 - 2007 WRX models need an STI oil cooler and an STI oil pan, so make sure these are properly installed.