The filter housing comprises of a high flow filter, aluminium cowl, laser cut bracket and the carbon pod itself. The carbon pod shrouds the reverse mounted filter and smoothly shapes the airflow down to the intake tube. This smooth reduction in cross sectional area invokes the Venturi effect where the airflow accelerates whilst maintaining laminar conditions. It can be thought of as a large velocity stack – below is a diagram to show the comparison between our patent pending design and a regular intake system. Further details can be read in the Technology page. The duct channels cold air from the slam panel opening to the filter. By designing the duct to smoothly transition from the rectangular opening at the front to the circular opening for the filter, it allows the airflow to remain as direct and smooth as possible.

The standard airbox is cuboid in shape which gives rise to turbulence and increases the drag on the turbo as a result. Furthermore it draws air from a duct, which despite extending over the entire grill is in fact only open on one side and this opening is also facing the engine so the airbox draws in warm engine bay heat. In addition, when the bonnet is closed, the only direct path for cold air is from the small slots in the top of the grill (for the Golf 7 variants).