Injen 10-21 Toyota 4Runner Evolution Cold Air Intake - Dry FilterSuperNano Web Dry Air Filter; "OMG that's massive!"is all you will hear about this SuperNano Web Dry air filter that is included in the EVO2202. This filter has been uniquely designed to work with the Injen Twist Lock System. Using our Twist Lock system has allowed our engineers to use the largest filter possible for this application, which increases the available air volume resulting in added power while keeping the installation process quick and