Using this K&N intake kit is straightforward. First, make sure your engine is cool before installation. The kit can usually be installed in less than 60 minutes. Just follow the included instructions step - by - step. When driving, under normal highway conditions, you can go up to 100,000 miles before servicing the filter. But if you drive in dusty or dirty environments, you may need to service it more often. To service the filter, simply wash it with the appropriate cleaner and let it dry completely before re - oiling it. Remember, in California, some intakes are not legal for use on pollution - controlled motor vehicles. Always check the product specifications for the CARB status of each part for your specific vehicle to avoid any legal issues.