RATING COLD AIR INTAKE NSB75-5043 '07-'09 RAM 6.7L CUMMINSResistance to Flow Testing: Flows 40.5% with the Cleanable Filter, 39.3% with the Dry Filter, better than the
stock intake when measuring just the resistance to airflow.Efficiency Rating: 99.81% Efficient with the Cleanable Filter (Cotton
Filter), 99.68% Efficient with the Dry Filter (Cotton Filter) both @ 653 CFM (ISO Course Dust)
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