Eventuri intake systems use a Patent Pending carbon fibre housing which provides an aerodynamically efficient airflow path from the filter to the MAF tube. Not just another cone filter with a heat shield but a unique design which invokes the Venturi affect.
The F9x M5 & M8 Eventuri intake system was developed through extensive real world testing and airflow simulation analysis. Now in the updated V2 design, it features sealed filter housings to maintain a more steady IAT, even while stationary. The new shrouds which seal the housings, coupled with our scoop and shield combination ensures unrestricted airflow whilst maintaining low IATs through cold air saturation. The large front air scoops transfer ambient air directly into the intake area thus ensuring the engine doesn’t suffer from heat soak.
In addition, Eventuri's gold heat-reflective lined shields have integrated flow guides which direct the ambient air from the scoops into the filters. Eventuri have also managed to increase the inlet tube cross-sectional area by over 30% compared to the stock intake as it feeds through the openings in the strut braces. This allows the turbos to work more with less restriction and reduce the waste-gate duty cycles.
This intake is now available to be ordered with a Gloss or Matte carbon fibre finish (select one).
Acceleration Time : 60-130mph Reduced By 0.22 seconds Max Flow Rate Per Airbox at 28″ H2O: Stock 620 CFM, Eventuri 736 CFM
PERFORMANCE
Road Testing
This intake was tested on the road using a Vbox unit to record the acceleration from 60-130mph . Testing was carried out on the same stretch of road - again on the same day to keep variables minimum. Results show that with just the intake added - on stock software, the acceleration times from 60-130mph reduced by 0.22 seconds which is a significant improvement at such speeds.
Acceleration results summary:
60-130mph with Stock intake = 8.48 seconds
60-130mph with Eventuri intake = 8.26 seconds
The gains are from a combination of reasons:
1) The larger inlet tube volume alows the turbos to work with less drag.
2) The Venturi housings provide a smooth transition from the filter to the intake tube keeping airflow laminar.
3) The large front scoops force ambient air into the intakes keeping the IATs low.
PRODUCT DETAILS
Carbon Intake Housing Assemblies
The filter housings comprise of Eventuri's bespoke generation 2 filters, aluminium inlet cowls, carbon shrouds, the carbon pods and integrated tubes. The carbon pods shroud the reverse mounted filters and smoothly shape the airflow down to the stock turbo inlet tubes. This is a key feature of the intake design where Eventuri have removed the requirement for a convoluted rubber hose between the airbox and the turbo inlet tubes. The filter housings and integrated tubes extend all the way to the stock turbo tubes and are able to move as one piece with the engine through the strut braces. This removes the extra interfaces of having a separate convoluted tube which the stock system requires for flexibility as the stock airboxes are mounted to the chassis so cannot move. The result is a smoother path from the filter to the turbo inlets and therefore the turbos are able to function with less drag.
Internal Volume
Another key design feature of the intake housings is the internal volumes of the tubing as they pass through the strut braces. On the F9x M5 & M8, the airbox system must pass through an oval opening in the strut brace on each side before reaching the turbo inlets. We have managed to increase the internal size of the intakes at this junction which results in more available volume for the turbos to draw from and therefore less restriction. The increase in cross sectional areas between the Eventuri and the stock airbox is 31% as follows:
Internal Cross Sectional Area of intake tube at the strut brace: Stock Airbox Tube = 6487mm² Eventuri Intake Tube = 8497mm²
Patented Technology
Eventuri's patented filter housings have a smooth reduction in cross sectional area as they shroud the filters and taper down to the tubing. This geometry invokes the Venturi effect where the airflow accelerates whilst maintaining laminar conditions. It can be thought of as a large velocity stack - below is a diagram to show the comparison between our patented design and a regular intake system. Our bespoke filters aid the airflow moving through the housings and allow for an even velocity profile as the airflow exits the housings.
Carbon Shrouds
These Carbon shrouds are a recent addition to this intake system. They seal the openings in front of the filter housings from the engine bay whilst still allowing for the air flow to enter the filters from the front scoops. The shrouds follow the design curves of the housings and extend to the inside wheel arches where a rubber seal allows for movement of the intakes with the engine. Made from the same high quality prepreg carbon fiber as the housings, the shrouds finish off the intake system beautifully.
Heat Shields & Air Ramps
The filter housings sit on top of these laser cut shields which also have a gold reflective backing to aid against radiated heat transfer. The shields attach to the chassis and also provide an enclosure for the openings of the housings to draw cool air from. This is aided by the integrated air ramps fixed to the inside of each shield. These ramps guide the air from the scoops upwards to the filters so when the car is in motion - the airflow being forced into the ducts from the front scoops is then directly pushed into the filter area displacing any engine bay heat.
Front Scoops
The final carbon components in this system are the front scoops - essential to direct ambient air to the filters.
The scoops were designed for maximum efficiency in directing the incoming air to the stock duct openings. Many aftermarket scoops have a large flat area almost perpendicular to the oncoming air - not great for channeling it into the ducts as the airflow just "hits" this flat portion and creates turbulence.
Unlike most aftermarket "scoops" the Eventuri Scoops have been designed extend from the stock duct openings all the way to the grills. In order to capture as much air as possible, the scoops are shaped to the same contours as the outsides of the grills and then smoothly channel ambient air through a continuous curve to the duct openings.
All the components come together in the engine bay to produce a genuine improvement in the driving experience as well as providing an incredible visual display of form and function in complete harmony.
KIT CONTENTS
The Eventuri F9x M5 & M8 intake system consists of a number of components engineered to perform a specific purpose and fabricated to the highest of standards.
Each intake system consists of:
2 x Carbon Fiber Venturi Housings with Integrated Tubes
2 x Bespoke High Flow Generation 2 Filters - Filter Type B
2 x Carbon Fiber Filter Shrouds
2 x Aluminium Inlet Cowls
2 x Carbon Fiber Air Scoops
2 x Laser Cut Heat Shields lined with Gold Heat Reflective Material
2 x Laser Cut Air Ramps integrated into the Heat Shields
High Quality Silicon Couplers and OEM Spec Hose Clamps
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