AEM Dryflow Air Filter for 07-16 Audi A4 1.8L TFSIAEM Dryflow Air Filters are engineered with advanced synthetic filtration media that delivers an ideal balance of high airflow, exceptional particle filtration, and long term performance. Built using durable, oil free filter material, Dryflow filters provide reliable protection, effortless cleaning, and consistent airflow. This offers a maintenance friendly solution designed to support both everyday driving and high performance applications.