Using this intake kit is easy. First, make sure your engine is cool. Then, follow the step - by - step instructions in the installation guide to install the kit in less than an hour. During normal use, you can enjoy up to 100,000 miles of driving between filter services on the highway. But remember, if you drive in dusty or dirty environments, you may need to clean the filter more often. To clean the filter, use a special filter cleaner and let it dry completely before re - oiling it. Also, be aware that in California, some parts of this intake kit may not be legal for pollution - controlled vehicles, so always check the CARB status before installation.