Using this product is quite 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 following the standard automotive installation procedures. Make sure to use the turbo gaskets properly to prevent any leaks. Wrap the 50' x 2in exhaust wrap around the exhaust parts as needed. As for the hardware kits, use them to secure all the components firmly. When it comes to maintenance, regularly check for any signs of loosening in the connections. Tighten the bolts if necessary. Keep an eye on the gaskets for wear and replace them if they start to show signs of damage. Also, remember the specific requirements for different model years. 02 - 05 WRX might need a 2.5l STI oil pan on some models, and 06 - 07 WRX needs an STI oil cooler and STI oil pan, so make sure these are in good condition as well.