Using this K&N air intake is easy. First, make sure your car engine is off and cool. Then, follow the included instructions to install the intake system, which usually takes less than 90 minutes. When driving, enjoy the increased power and performance. As for maintenance, under normal highway driving conditions, you can go up to 100,000 miles before servicing the filter. When it's time, simply wash and reuse the filter. Be aware that in California, some intakes are not legal for pollution - controlled vehicles. Always check the product specifications for the CARB status of your specific vehicle.