Using this MBRP Armor Lite Cat Back Exhaust is straightforward. First, follow the included installation instructions to bolt it onto your 2022 - 2025 Subaru WRX. Once installed, you're ready to enjoy the improved performance and the great sound. When using it, keep in mind that it's designed for dry climates. If you live in an area with a lot of rain or salt on the roads, it might not last as long. For maintenance, regularly check the bolts to make sure they're tight. If you notice any unusual noises or changes in performance, have it inspected. Also, keep the exhaust clean to prevent build - up of dirt and debris, which can affect its performance over time.