Using this turbocharger is straightforward. First, make sure to do a TGV Delete so it can fit in the stock location. When it comes to the oil line, carefully read the description to figure out which one fits your Subaru WRX or STI model and add it to your order notes. After installation, start your engine and let it run for a few minutes to ensure proper oil circulation. As for maintenance, regularly check the oil level in the turbocharger. Also, keep an eye on the turbo's performance, and if you notice any strange noises or a drop in power, it might need inspection. Remember, these turbochargers are custom - built, so delivery times can vary. Be patient and wait for your high - performance turbo to arrive and enhance your driving experience.