On the other hand, as the throttle opening increases with the increasing angle of the throttle plate, the volume flow and air velocity both start to increase, to the point where it is able to generate laminar flow through the throttle body. Beyond this point, where laminar flow is dominant across the throttle body and the effect of turbulent flow impeding the air flow is much less significant, the effect of the filter elements being an obstruction to airflow becomes increasingly significant.