PDI Big Boss Cummins N14 Exhaust Manifold

Available for: Cummins N14 Celect Plus Engines Key Benefits 20% increase in airflow over stock 75-100 degree cooling of EGTs Made in the USA Warranty: 3 Year Unlimited Mile Warranty The Cummins N14 Celect Plus Exhaust Manifold has been designed to maximize the exhaust air flow, to reduce turbo lag time, and cool exhaust temperatures. Stock and competitive products on the market fall short as their design constricts the airflow increasing the turbo response time. Hard angles of their design cause higher swirl rates and friction which will increase the exhaust temperatures putting more risk on the engine.  With lower quality iron an exhaust manifold from a competitor or stock can weaken over time as the manifold expands and contracts it will develop cracks and even flake. During the design process each port has been analyzed and tested to provide a balanced flow to the turbocharger. The diameter of the runners has been designed to produce, on average, a 20% airflow increase over a stoc