Outflows stock up to 50 Percent. Reduces exhaust gas temps (EGTs). Exclusive 4-1/2 inch bellows to accommodate engine movement. Enclosed housing keeps out hot, power-robbing engine air. Easy filter access for monitoring & cleaning. 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. Banks Ram-Air Intake maximizes the flow of cool, dense air to the engine for greater power and fuel economy. Thanks to its enclosed cold-air housing, huge inlet with giant dome-shaped filter, and streamlined internal design, it flows 50% better than stock! In fact, it performs so well that it delivers greater air density to the turbo's inlet than all competitors tested. Longer service life, too. An aftermarket exclusive: with 4-1/2" 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. It's all about density. And Banks Ram-Air Intake delivers. The harder you work your truck, the more Banks Ram-Air Intake improves power and fuel economy!