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How does Eventuri technology work?
"What sets Eventuri intakes apart?"
The answer to this question consists of two main elements:
- Patented Eventuri Filter Housing Design
- Our Bespoke Filters
- Our Emphasis on Creating a "Complete Solution"
Check out products Eventuri available in our offer.
Patented Eventuri Filter Housing
At first glance, the Eventuri intake looks entirely different from many other intakes available in the market. Unlike most intakes, which use the same cone filter/inlet tube/heat shield configuration, the Eventuri design is fundamentally different and has been patented.
Aftermarket Intake Systems
Most aftermarket intakes use a cone filter that is connected to an inlet tube with some type of heat shield. In this configuration, airflow must travel from the large diameter at the base of the filter to the smaller diameter of the inlet tube over a relatively short distance. Typically, there is a velocity stack at the base of the filter to assist in the transition, but it is usually small. The sudden change in geometry is detrimental to flow. The result is a loss of throttle response, and performance gains are usually limited compared to the OEM intake system. The diagram below shows a typical aftermarket intake using a cone filter attached to an engine inlet tube. The filter uses a standard velocity stack, highlighted in yellow.
Eventuri Intake System
Eventuri is a new type of intake design that has been patented. We use a cone filter, but it is inverted and separated from the inlet tube. By removing the direct connection between the filter and the inlet tube, the filter no longer dictates the shape of the airflow. Now, the carbon fiber housing does this, smoothly guiding the air into the inlet tube without sudden changes in geometry. This means that laminar conditions are maintained throughout the intake, which is much more efficient. Additionally, the funnel-shaped housing invokes the Venturi effect, where the smooth reduction in cross-sectional area along the length of the housing accelerates airflow. Essentially, the entire housing acts as a large velocity stack. This translates to more power with smoother delivery and sharper throttle response, as airflow is not hindered by abrupt geometry changes and is more likely to remain laminar. The diagram below shows an Eventuri intake system with a reverse-mounted filter inside an Eventuri housing. The large velocity stack area is highlighted in yellow.
Bespoke Eventuri Filters
Bespoke Filter Design
We are proud to present Eventuri cone filters for the year 2018. This filter is a specially designed model developed to ensure optimal airflow through our Eventuri housings, where the filter is mounted in reverse. It is a direct replacement for all our intakes using Eventuri carbon housings and will be installed in all new intakes from 2018.
Filtration and Construction
Unlike many other intake companies that use standard filters, we have conducted extensive research and invested significant resources in our own unique filter design, optimized for our patented reverse mounting configuration. The filtration medium is made of non-woven mesh and is ISO 5011 tested, conforming to the same filtration standards as OEM filters. The mesh is double-layered and dry, meaning it will not damage MAF sensors with oil. Our filters feature two flow-directing cones carefully modeled to direct airflow as follows:
- Internal Cone – designed to guide incoming airflow through the filter and create an even velocity profile across the length of the filtration material. This cone effectively disperses airflow across the filter without turbulence.
- External Cone – CNC machined with a unique profile optimized to pull airflow down to the center and transition smoothly into downstream tubing. This cone creates a controlled turbulence area around the tip, increasing the convergence speed of the air so that connecting tubing has a higher airflow velocity profile leading to the engine.
Airflow
The resulting airflow through the filter and smooth exit from the intake to the connecting tube is smooth with a high-velocity profile. In practical terms, this means that the engine can efficiently draw air, and the driver will notice sharper throttle response, as well as power and torque improvements. Where the engine has a turbo(s), it will achieve peak boost earlier, as it will be working with less resistance. Tests have shown that our systems reduce the wastegate duty cycle by a significant percentage compared to the OEM system.
The following diagrams are CFD simulations showing velocity streamlines through our system - with the new filter and the original filter.
Resulting Improvements
Through dyno testing, conducted on Eventuri intakes directly compared with original filters and upgraded filters, we have observed additional power and torque gains. This validates our theoretical modeling and proves that the upgraded filters indeed have a significant impact on airflow through the intake. Power gains above original filters vary by vehicle, but here are some of the results we have measured so far. Please note - these graphs show the Eventuri intake with the original filter compared to upgraded filters. Not against stock airboxes - which will yield even greater gains!
Aesthetics
Aside from technical improvements, the upgraded filters resemble aircraft engines - resulting in a dynamic overall aesthetic once installed in carbon fiber housings. Looking from the reverse - into the carbon fiber housing - the laser-etched outer cap is clearly visible surrounded by the filter mesh. An awe-inspiring sight.
Application List
The upgraded filters will be used on all relevant Eventuri intakes from February 2018. They are also available as direct replacements for existing Eventuri intakes using the original style double cone filter in the reverse mounted Venturi housings. The new filters are available for ALL Eventuri intakes EXCEPT the following models:
- BMW E92/E90 M3
- Audi C7 RS6/RS7
- Honda Type R FK8
Complete Solution
Finally, an equally important element of our design is our emphasis on creating a complete solution. We devote much effort to designing to ensure that filter housings are supplied with ambient air in the most efficient manner. Allowing filters to draw warm air from the engine bay is counterproductive and in many cases leads to actual power loss compared to the factory system when the engine bay is heated. Heat shields alone are not enough - there must also be a method of directing cold air to the intake. Here we have seen some companies use a "funnel," but upon closer inspection, they are usually very flat and almost perpendicular to incoming air. This is not an ideal solution.
On the Road
With a smooth intake path to the MAF/engine internals and ensuring effective cold air access to the filters, performance gains translate into improved driving comfort:
Throttle response is sharper as airflow velocities in the intake path are maintained thanks to the Venturi effect. Torque in low/medium RPM ranges is increased, enhancing overall drivability. The car feels more aggressive and eager to drive. High RPM power is enhanced as the engine can draw cold air with less resistance.
Combine performance gains with a more pronounced and melodic induction sound, and overall driving comfort becomes much more engaging and enjoyable.
