The Victory Function fender vents took their inspiration from the fender extractors used by the Nismo R34 GT-R Z Tune.
Here is how the air flows out of the Z-Tune vents.
The Victory Function vents have two extractors, the front one is for the wheel well and the rear one is for the cowl area. Their shape creates low-pressure zones to hopefully encourage exhaust airflow. The vents do have more area than the Z Tune R34.
You can see the area of the vent. You can also see the area of the wheel well vent that we installed earlier.