Using this turbocharger in your Subaru WRX or STI is a great way to boost performance. First, make sure you delete the TGV to fit it in the stock location. When installing, use the included oil return flange and - 4 water fittings to set up your custom water feed/return lines. Keep in mind that the oil line is not included, so you'll need to get one separately. During operation, especially in road racing or autocross where oil flow might be low, the Xona Ball Bearing CHRA in this turbo will provide good durability. But always monitor your oil levels to ensure everything runs smoothly. For maintenance, regularly check the turbo for any signs of wear or damage. If you notice any issues, it's best to have it inspected by a professional. Also, remember that these turbos are custom - built, so if you have any specific questions or need support, contact the manufacturer. And don't forget, you get a free Subaru Gasket set when you buy this turbo, which can be handy for the installation.