aFe Magnum FLOW Universal Air Filter w/ Pro DRY S 3 IN F (offset) x 6 IN B x 4-3/4 IN T x 7 IN H 1986-nissan-d21-esi5295211 400 rpm when tested on

400 rpm when tested on The Akrapovic dyno against a BMW X5M with a stock M Sport exhaust system for comparison

improve airflow

Over the last decade

2012-2014 Volkswagen Jetta GLI

and valve shims are available through aFeControl

aFe Magnum FLOW Universal Air Filter w/ Pro DRY S 3 IN F (offset) x 6 IN B x 4-3/4 IN T x 7 IN H 1986-nissan-d21-esi5295211 400 rpm when tested onWith three layers of progressively finer mesh synthetic media between 100% polyurethane top and base, this high flow, "oil free" conical performance filter provides maximum convenience and easy maintenance with excellent airflow. Washable and reusable for multiple cleanings, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Pliable polyurethane flange with integrated bumps insures