Ram-Air Intake System

Key Features Fits 2004.5-2005 Chevy/GMC 2500/3500 6.6L Duramax, LLY Only Enclosed housing keeps out hot, power-robbing engine air Horsepower gain up to +39 hp and +69 lb-ft of torque Extends service life and requires fewer cleanings Inhales cooler outside air for more power & MPG Reduces exhaust gas temps (EGTs) and smoke Outflows stock and competitors up to 35% Giant filter maximizes high-flow filtration Accommodates engine movement Prevents component damage Helps engine run cooler 5-year Limited Warranty OILED or DRY Air Filter Element About This Product Gain up to +39 hp/+69 lb-ft. Reduces exhaust gas temps (EGTs) and smoke. Outflows stock and competitors up to 35 percent.  Fitment Note Fits 2004.5-2005 Chevy/GMC 2500/3500 6.6L Duramax, LLY Only 2004 was a split year between LB7 and LLY engines. Check which engine you have. Locate the 8th digit of the VIN. 1 is LB7 and 2 is LLY Specifications Passes the test. Again and again.   Others build and ship without testing. Not Banks. Our Ram-Air Intakes start out as CAD software prototypes and are put through flow simulations. The design is refined until the simulation shows optimal performance. Then a hardware prototype is made and the design is validated on a flowbench. After that comes dyno testing and on-vehicle testing. It takes a superior design to pass all those tests! Filter on a stick: a joke that’s not funny.   A filter on a stick is a bad joke. It’s wide-open to hot, power-robbing underhood engine air. Ram-Air houses a giant filter in an enclosed cold-air box, which inhales cool, dense outside air—more than Banks’ competitors and up to  35%  more than stock—for more power (up to  +39 hp/+69 lb-ft  , with tuner). More mileage, lower EGTs and less smoke, too. And it’s designed to not cause fault or error codes. Bellows, too? Very exclusive.   Banks Ram-Air is the only aftermarket intake with bellows. This accommodates engine movement and prevents component damage for longer service life. Overview Summary We measured each intake’s effect on air density at the turbo compressor inlet. Intake temperatures will generally be higher than ambient conditions, but the more the system can duct cool air to the filter and preserve the cool temperature as the air is ducted to the turbo, the higher the air density will be. In addition, there will commonly be a pressure drop as air travels through the filter and the ducting due to any restriction that is introduced. If the design of the system can minimise the restriction and the pressure loss, air density will be preserved. Test Setup A 2006 Chevrolet 2500HD, 4 wheel drive, with a crew cab, six foot bed and automatic transmission was used as the test vehicle. A data acquisition system was used to measure vehicle speed via GPS, along with multiple temperature thermistors and extremely accurate pressure transducers. The total vehicle weight was approximately 19,000 lbs. Tests were run in 2WD. Testing was conducted on a moderate hill on the northbound CA-57 in the city of Pomona. Speed was maintained at 45 MPH until the vehicle was adjacent to a pre-determined start point on the road. At that point, the accelerator was fully depressed and the vehicle was allowed to accelerate while climbing the hill. Test data was observed at the same vehicle speed in all cases, with the engine at 2800 RPM, the point of peak engine power. This data point occurred between 60 and 90 seconds into the run—sufficient time to allow the engine to reach a stabilized operating condition. Bottom Line Why on earth would anyone pay money for a product that kills power and mileage? It’s all about density — and Banks Ram-Air delivers.