Using this K&N intake kit is easy. First, make sure your engine is cool. Remove the old intake system and install the new kit following the included instructions. It usually takes less than an hour. When driving, you'll notice improved performance right away. For maintenance, under normal highway driving, you can go up to 100,000 miles before servicing the filter. When it's time, wash the filter with a special cleaner and re - oil it. Also, keep an eye on the heat shield to ensure it's properly protecting the intake air. Remember, in California, some intakes aren't legal for pollution - controlled vehicles, so check the CARB status before use.