Using this turbocharger is straightforward. First, make sure your car is a 2015 - 2021 Subaru WRX with the FA20 engine. The turbo comes with an oil line and gasket set, so you can directly bolt it onto your car. When installing, pay attention to the fitment and follow the installation guide carefully. As for maintenance, regularly check the oil level and the condition of the oil line. Change the oil according to the manufacturer's recommendations. Also, keep an eye on the turbo's performance. If you notice any unusual noises or a drop in power, it might be time to have it inspected. Remember, the factory oil drain sump needs to be reused, but it's not included in the package.