Using the Tomioka TD05 - 20G turbocharger is quite straightforward. First, make sure to install all the components from the kit correctly according to your vehicle's manual. The turbocharger, gaskets, actuator, oil pipe, water pipe, and hardware kits should all be in place. When starting your car, let it idle for a short time to allow the turbo to warm up. During normal driving, avoid sudden acceleration and deceleration as much as possible to prevent unnecessary stress on the turbo. As for maintenance, regularly check the oil and water pipes for any leaks. Also, change the engine oil at the recommended intervals to keep the turbo running smoothly. If you notice any strange noises or a decrease in performance, it's a good idea to have it checked by a professional.