Using this intake kit is easy. First, make sure your vehicle is turned off and cooled down. Then, follow the step - by - step installation guide provided. It usually takes less than an hour to install. During normal highway driving, you can go up to 100,000 miles before servicing the filter. But if you drive in dusty or dirty conditions, you may need to service it more often. To service the filter, simply remove it and wash it with a suitable cleaner, then let it dry and re - oil it. Remember, some parts of this intake kit may not be legal for use in California on pollution - controlled vehicles. Check the product specifications for the CARB status of each part for your specific vehicle to avoid any legal issues.