Using this K&N intake kit is easy. First, make sure your vehicle engine is cool before starting the installation. You can typically install the whole system in less than 90 minutes following the included instructions. When driving, you'll notice an immediate improvement in your vehicle's performance. For maintenance, under normal highway driving, you can go up to 100,000 miles before servicing the filter. To clean the filter, use a K&N filter cleaning kit. Just follow the steps on the kit to wash and re - oil the filter. Remember, some intakes are not legal for sale or use on pollution - controlled vehicles in California, so always check the CARB status for your specific vehicle before using it.