Using this HKS cold air intake kit is easy. First, make sure your car's engine is cool. Then, remove the old air intake system carefully. Install the new HKS kit according to the included instructions. When you're done, double - check all the connections. As for maintenance, clean the air filter every few months. If it's really dirty, replace it. Also, check for any loose parts regularly. Avoid getting water inside the intake system, as it can damage the engine. With proper use and care, this kit will serve you well for a long time.