Using the AEM 21-807C cold air intake system is easy. First, make sure your engine is cool. Remove the old air filter and airbox from your 2016 Infiniti Q50 with the L4 - 2.0L F/I engine. Install the AEM heatshield in place of the factory airbox and use the included hardware for a secure fit. Attach the AEM Dry Flow filter. Remember to use the rubber edge trim to create a good seal between the heatshield and the engine cover. As for maintenance, check the filter regularly. Depending on your driving conditions, you may need to clean it every 100,000 miles. Cleaning is simple - just wash the filter with water and let it dry. Make sure to check the legal status of this product in your state before use. It's not legal for sale or use in California on emission - controlled motor vehicles.