CFM+/Fastcore, LLC designs and manufactures all their intake manifolds with the most advanced processes available. Their advanced computational fluid dynamic technology, state-of-the art robotic integration manufacturing process and special composite material truly makes a difference in your airflow. More air is delivered in a cooler and less turbulent flow.
Regardless of which tuner, air filter, and exhaust system or aftermarket intake you may already have, you need to dramatically increase your airflow for ultimate diesel performance. No other aftermarket intake comes close. CFM+ flows so much better than the angular stock aluminum manifold with its nearly 40% flow restriction at the front mounting bolts.

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