Using this K&N intake kit is easy. First, make sure your engine is off and cool. Then, follow the step - by - step installation guide provided with the kit, which usually takes less than an hour. Once installed, you're ready to enjoy improved engine performance. When it comes to maintenance, under normal highway driving conditions, you can go up to 100,000 miles before servicing the filter. When the time comes, wash the High - Flow Air Filter with a suitable cleaner and let it dry. Then, re - oil it as per the instructions. Remember, some parts of this intake kit are not legal for use on pollution - controlled vehicles in California. Always check the product specifications for the CARB status of each part for your specific vehicle before installation.