Using this Injen intake is easy. First, make sure your vehicle is turned off and cooled down. Then, follow the included installation guide to replace your old intake with the new EVO7301. When driving, you'll notice better performance right away. For maintenance, check the air filter regularly. If it looks dirty, you can clean it using a recommended air filter cleaner. Avoid getting the intake wet in heavy rain or when washing your car directly. Keep it dry to ensure its long - term performance. And if you ever have any questions, don't hesitate to contact our customer service.