Below is a general manufacturer product group description. Please note the information below is not item specific. Item specifics are above in product details.

Stock intake manifolds have sharp bends and corners. As air flows around these corners, dead air zones are created. These dead air zones choke down the air and restrict airflow to your engine.
aFe’s MDV technology uses smooth bends and directional vanes to form multiple air paths through the manifold. These new paths are smoother and shorter, producing much smaller dead air zones for increased overall airflow to
the engine.

Unique airflow path with MDV Technology
Proprietary internal bolt design – guaranteed to not deform and leak
Cast A356-T6 aluminum construction
Up to five port pads
Custom black-zinc finished steel bracket of OE wire harness
Faster turbo spool-up
More horsepower
Increased low-end torque for more towing power
Improved boost pressure
Stainless steel hardware