Using the Tomioka TD05 - 20G turbocharger is easy. First, make sure your car model (WRX 2008 - 2014 or Legacy GT 2005 - 2009) is compatible. The turbo comes with all the parts you need, like the actuator, oil and water pipes, gaskets, and hardware kits. Just take them out of the box and bolt them on. When you're driving, this turbo can give you up to 400HP, which is great for both street and track use. But remember, always let the engine warm up before pushing it hard. For maintenance, check the oil and water pipes regularly for any leaks. Also, clean the turbo periodically to keep it performing well. If you notice any strange noises or a drop in performance, it might be time to have it checked by a professional.