Testing, testing & more testing.Banks Ram-Air Intake Systems are tested and proven. They start out as CAD software prototypes and are put through flow simulations. After a hardware prototype is made, it's tested on a flowbench. Then it's tested on the vehicle. And finally, Banks' density-tests the Ram-Air against stock and many competitors.Proven design. Proven performance.Thanks to its enclosed cold-air housing, huge inlet, giant dome-shaped filter, and streamlined design, Banks Ram-Air Intake maximizes the flow of cool, dense air to the engine for greater power and fuel economy. It flows better than stock and the competition. And delivers greater air density to the turbo's inlet than the stock system and every competitor tested!It's all about density.And Banks Ram-Air Intakes deliver. The harder you work your truck, the more Banks Ram-Air Intake improves power and fuel economy!Longer service life, too.An aftermarket exclusive: with 5-inch bellows, Banks Ram-Air accommodates engine movement, which protects the components and extends service life. What's more, Ram-Air is designed to not cause fault or error codes.New over-sized filter element, largest in its class, protects engine and outflows competitionBeats stock and the competitionCooler tempsEnclosed housing keeps out hot, power-robbing engine airMore airflow increases the air-fuel ratioAllows the engine to run leanerReduces soot outputDecreases the frequency between regensHelps the engine run coolerExtends service life and requires fewer cleaningsPatented slip-fit protects from engine movementWindow on housing to check filter condition5-year Limited WarrantyBeats stock and the competitionLess restrictive than stockDry Air Filter ElementEmissions Compliant: D-161-102US Patent #10,138,851 B2