The point of a cold-air intake is not just to bolt on a bigger tube. It has to fit the truck correctly, reduce restriction, and deliver a clean, usable airflow signal to the engine. That is why we design the Banks Ram-Air Intake System from a digitized model of the truck, build prototype parts in-house, and take them straight to the flow bench. That process lets us shape the inlet duct, verify airflow, and determine MAF sensor position so the system works properly with modern engine management. Better air mass is only useful if the truck can use it cleanly and consistently.
The video opens inside Banks' drafting and design area, contrasting traditional drafting with modern CAD-based product development. After 28 years at the company, Bob Rabe is described as the draftsman, while the newer engineers work as CAD designers using computer-based tools. The focus shifts to James, who is designing a Banks Ram-Air intake system for a Duramax diesel application.
The intake system is developed by first digitizing the truck and loading that vehicle data into the computer. From there, the team designs directly around the truck's geometry rather than relying on trial-and-error fabrication. James is shown working on an inlet duct, specifically a cold-air duct, represented in the CAD model as a red component. This digital approach allows the intake path to be shaped precisely for fitment and airflow within the engine bay.
Once the CAD design is complete, the file is sent to Banks' rapid prototyping machines so the part can be physically produced in-house. The prototype shown is built in multiple pieces and then cemented together, but it is intended to function like the finished component. This gives the engineering team a usable test article early in development, without waiting for final production tooling or manually fabricating parts from sheet metal and bench-built mockups.
The video emphasizes how much more efficient this process is than older fabrication methods. Instead of spending weeks shaping metal by hand on a bench, the team can move quickly from digital design to a working prototype. That speed shortens development time while also making it easier to refine the part before committing to manufacturing.
With a prototype in hand, Banks can immediately begin airflow testing. The part can be taken to the flow bench to measure how well it performs and to verify that the design supports the intended air path. This stage is also used to determine the proper position of the mass air flow sensor, referred to in the video as the MAF sensor. Correct sensor placement is important not only for airflow performance but also for ensuring that the intake works properly with the engine management system.
The recap then shifts from development process to product purpose. Banks describes the Ram-Air system as a way to force cooler, denser outside air into the engine. The stated goal is long-lasting performance for both gas and diesel trucks. Rather than presenting the intake as a cosmetic add-on, the video frames it as an engineered airflow system designed around the vehicle and validated through testing.
According to the video, the Banks Ram-Air system can add up to 39 horsepower and 69 lb-ft of torque. It also claims airflow advantages over both competing systems and the stock intake. Specifically, Banks states that Ram-Air outflows the competition by up to 22% and outflows stock by up to 48%. These figures are presented as the measurable outcome of the design and testing process shown earlier in the segment.
The closing message notes that the Ram-Air system is designed for specific truck applications and identifies coverage for Ford, Dodge, GM, and Jeep platforms. The product is also described as race proven. The overall engineering story presented in the video is that Banks develops these intake systems entirely in-house, beginning with vehicle digitization, continuing through CAD design and rapid prototyping, and ending with airflow and sensor-validation testing before manufacturing.