The aFe Turbo Inlet Manifold increases performance to your Duramax by 23hp and 57lbs  x ft. torque while increasing air flow by 73% over the factory manifold. The Bladerunner turbo inlet manifold also improves turbo spool up times and lowers exhaust gas temperature (EGTs).  This unit is constructed out of durable A356-T6 aluminum and uses the patented multi-direction vane (MDV) technology to help guide air through the manifold to your turbo.  This kit come complete with turbo inlet manifold and all hardware needed for an easy installation.