Using this K&N intake kit is easy. First, make sure your engine is cool. Then, follow the included instructions to install the kit, which usually takes less than an hour. During normal highway driving, you won't need to service the filter until you've driven about 100,000 miles. But if you drive in dusty or dirty conditions, check the filter more often. To clean the filter, use a K&N filter cleaning kit. Simply remove the filter, wash it according to the kit's directions, let it dry, and re - oil it. Remember, some versions of this intake are not legal for use in California on pollution - controlled vehicles, so always check the CARB status for your specific vehicle before installing.