Using this TurboXS RFL TI Axleback Exhaust is quite straightforward. First, make sure your vehicle is a 2002 - 2007 Subaru WRX or 2004 - 2007 Subaru STI. Then, check if you have either an OEM midpipe or a TurboXS midpipe as this exhaust only works with them. Use the unique flange design to bolt the exhaust directly to the midpipe. You may need to buy the Turbo XS 4 - Bolt 3 - inch Gasket separately. When it comes to maintenance, keep an eye on the bolts to ensure they are tight. If you notice any rattling, it might be a sign that a bolt is loose. Also, always follow the California Prop 65 Warning. Avoid breathing in the exhaust fumes. Don't let the engine idle for too long. When servicing your vehicle, do it in a well - ventilated area and make sure to wash your hands often or wear gloves to reduce exposure to harmful chemicals.