Created internally as an employee pet project. This is a redesign of the Duramax Exhaust Manifold to improve flow volume and flow efficiency.
Features:
Flow Volume Increased 51% over OEM Exhaust Manifold
Flow Volume Increased 7% over leading Aftermarket Exhaust Manifold
1/8" NPT EGT sensor ports on each cylinder as well as the discharge into the Up Pipe.
Includes only Driver and Passenger Manifolds.
Gaskets, Up Pipes, and hardware do not come with these manifolds.