Air Suction Manifolds are easy to install in every kind of filter box or wherever more airflow is required. Measure the capacity of your box and you will see that you will never have the flow needed. The manifold can in no way increase the volumetric capacity of the box, but it enables it not to depress when the motor reaches the peak of suction, that is to say in the peak of torque, by supplying a supplementary suction inlet. Model Bonalume.