Enclosed housing keeps out hot, power-robbing engine air; inhales cooler, denser outside air. Improves flow up to 31% for greater power and MPG; helps engine run cooler and cleaner. The giant filter flows more freely than the factory's highly dense paper filter, and the aerodynamic shape eliminates restrictions. Works seamlessly with stock sensors to not generate trouble codes. Accommodates engine movement for greater durability.
Easy install; reusable filter is easy to access for monitoring and cleaning. (By contrast, the stock filter is difficult to access, not reusable, and when dirty, requires replacement of the whole expensive unit!) Unit is triple validated before the name "Banks" is stamped on. We test; the other guys Don't. That's the Banks difference!
- Extensively tested & validated
- Enclosed housing keeps out hot, power-robbing engine air
- Inhales cooler outside air for more power & MPG
- Giant filter maximizes high-flow filtration
- Helps engine run cooler
- Accommodates engine movement
- Prevents component damage
- Extends service life and requires fewer cleanings
- 5-year Limited Warranty
- Improves flow up to 31%
- Helps engine run cooler and cleaner.
- DRY Air Filter Element
Emissions Compliant: D-161-118
US Patent #10,138,851 B2
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 minimize the restriction and the pressure loss, air density will be preserved.
Test Setup
A 2004 Dodge Ram 2500 4X4 Quad Cab Long Bed with the Cummins 5.9L engine 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.
Data Acquisition
Vehicle Speed, Engine RPM and Accelerator Pedal Position were logged to determine the load conditions and speeds. Temperature was measured using thermistors for increased accuracy. They were mounted to measure ambient temperature as well as temperatures at the filter and compressor inlets. Pressure transducers were used to measure pressure in the same locations. The intake system effect on air density was evaluated by comparing the temperature and pressure of the ambient air condition with the temperature and pressure of the air at the turbo compressor inlet.
All intake filtering systems will have some effect of diminished air density from ambient, including stock. The purpose of this evaluation is to compare this effect in relation to the stock system. A replacement intake system is only valuable and effective if the intake air density percentage vs. ambient is greater than the air density percentage offered by the stock system.
All data presented assumes an ambient temperature of 77° and ambient pressure of 29.24 inches of mercury, per SAE standards.
Test Results:
| Stock Intake |
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| Banks Ram-Air |
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Replaces the stock setup with new housing, filter with 7.5” outlet, lid & ducting system made of cross-linked polyethylene & polypropylene, all the way to the inlet of the turbo compressor. Inlet to filter housing is sealed to the fender air duct with open-cell foam.
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| Banks Ram-Air with optional Super-Scoop |
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| AEM Brute Force Intake |
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Replaces the stock setup with an aluminum tube, dry filter & a sheet metal heat shield. Filter has a 4” outlet which mates to the aluminum tube.
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| AFE Stage I and Stage II |
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Both systems use a filter with a 6” outlet. Stage I leaves the filter exposed with a sheet metal heat shield.
Stage II has a fully enclosed housing with an integrated forward-facing scoop.
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| Airaid Intake System |
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Quick-fit system filter mounts to an adapter that mates to the factory inlet duct with a 3.75” inside diameter.
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| Bullydog RFI |
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Sheet metal enclosure with an opening toward the factory fenderwell opening. Filter is mated to a section of elbow tubing that mates to the factory bellows & silencer.
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| Volant Cool Air Intake |
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Oval-shaped filter housed in an enclosed box with three openings: one at the bottom, one toward the front & one toward the fender.
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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.