Using this turbocharger is straightforward. First, make sure to perform a TGV Delete so that it can fit in the stock location. When it comes to the oil line, carefully read the descriptions we provide to pick the right one for your Subaru WRX or STI model. Install the turbocharger following the standard automotive installation procedures. As for maintenance, regularly check the oil line for any signs of leaks or damage. Keep an eye on the turbo's performance and if you notice any decrease in power or strange noises, it might be time to have it inspected. Remember, this turbocharger is custom - built for you, so be patient with the build time as we can't guarantee an exact delivery date. And don't forget, when you buy this turbo, you get a free Subaru Gasket set which can be useful during installation.