The aFe Stage 2 Si sealed cold air intake produces up to an incredible 21HP and 55lbs. x ft. torque. This intake is fully sealed in a highly engineered rotomolded airbox with two built-in auxiliary air scoops for a maximum air intake charge. The full intake system is a better choice for overall performance. AFE offers three different types of filter media this intake system. There is the (Blue)Pro5R, (Gold)ProGuard7 and (Gray)ProDryS. Without going into details of each media, the basically differences are: 1) Pro5R is 5-layers of progressively finer mesh oiled cotton gauze which offers maximum airflow. This media is ideal for those who drive mostly on paved street and highway who want maximum horsepower. 2) ProGuard7 is 5-layers of progressively finer oiled cotton gauze used in the Pro5R media backed by another 2-layers of finer porosity synthetic non-woven media which offers maximum protection. This media is ideal for those who do a lot of unpaved, off-road driving in severe dusty and dirty environments where protection is more important than maximum horsepower. This media is most popular with compression-ignition diesel truck owners. 3) ProDryS is a 3-layer progressively finer porosity synthetic non-woven media, which is oil-free and offers maximum convenience since it does not require re-oiling. This media is ideal for those who don’t want the hassle of re-oiling a filter.
Customers have claimed fuel economy increases from 1-5 MPG, but AFE will not make claims of fuel improvements beings all vehicles & habits are different.
Not at all! The AFE Pro Dry-S Stage 2 Sealed Air Intake System 51-81872 is a drop in replacement that’s completely code-free.