Using your K&N intake kit is easy. First, make sure your vehicle is turned off and cooled down. You can install the entire system in less than an hour. Just follow the included instructions carefully. When driving, you'll notice an immediate improvement in performance. As for maintenance, under normal highway driving, you can go up to 100,000 miles before servicing the filter. When it's time, simply wash the High - Flow Air Filter and reuse it. Remember, if you're in California, check the CARB status of each part to ensure legal use on your pollution - controlled vehicle.