Using this turbocharger is a great way to enhance your Subaru's performance. First, make sure you have a TGV Delete if you're using the 84MM FAP Cover to fit it in the stock location. When installing, connect the included oil return flange and use the - 4 water fittings to set up your custom water feed and return lines. Since the oil line isn't included, you'll need to source one that fits your vehicle. If you opt for the ceramic coating from Tirado Custom Coatings, it can add extra protection. Remember, all turbos are built to order, so be patient as the build time can vary. Also, if you choose an internal wastegate, your turbo will come with a 1 bar actuator. For maintenance, regularly check the oil flow, especially if you're using it in road racing or autocross where low oil flow might occur. Keep an eye on the compressor and turbine wheels and make sure the gasket set remains in good condition. If you notice any issues, it's best to consult a professional mechanic.