Eventuri BMW Carbon Intake

Info

Introducing our F9X X5M, G09 XM intake. This intake is the result of extensive R&D and testing to improve on the flow path of the stock system. Our system is a complete redesign of the stock airboxes with the aim of reducing pressure loss while increasing the flow rate and keeping inlet temperatures low. With the stock cold air feeds at the front of the car and the turbo inlets facing the rear of the car, the airflow has to negotiate a 180 degrees turn through each airbox resulting in a flow restriction. To overcome this we have introduced an additional cold air feed from the scuttle panel, which results in a more direct flow path to the turbo inlets. The additional feeds allow the intake to have a higher flow rate whilst keeping IATs low and have an additional benefit of de-restricting the sound of the turbos. With the intake openings now facing the cabin, the turbo flutter and pressure release sounds are clearly audible, elevating the driving experience to another level.

Product Details

The Eventuri X5M intake system consists of a number of components engineered to perform a specific purpose and fabricated to the highest of standards. We use 100% pre-preg carbon fiber with no fibreglass which means we can achieve a smooth internal surface to maintain smoother airflow.

Each intake system consists of:

• 2 x Carbon Fiber Patented Venturi Filter Housings
• 2 x Bespoke High Flow Dry Cone Filters
• 2 x Carbon Fiber Twin Air Ducts
• Carbon Fiber Engine Cover
• 2 x EPDM Rear Air Feeds
• Silicon Couplers
• CNC Machined Bracket Mounts

Filter Housing Assemblies

The filter housings comprise of our bespoke generation 2 filters, aluminium inlet cowls and stainless steel brackets. The carbon pod shrouds the reverse mounted filter and smoothly shapes the airflow down to the OEM turbo inlets. This changes the flow path from the OEM airbox where airflow enters the base of the airbox, changes direction by 90 degrees to travel through the panel filter and then changes direction again by 90 degrees to move through the tube section. Our system is a lot more direct with airflow entering the front of the filter housing and and moving into the turbo inlet section without any abrupt direction changes. The result is a smoother path from the filter to the turbo and therefore it is able to function with less drag.

Bespoke Cone Filter

In order to achieve the highest flow rate possible we are using a filter element to make as much use of the space available in the engine bay as possible. The filter medium is ISO tested to ensure that filtration is in line with OEM standards and is also dry. The filter is constructed with our signature flow cones to aid in the Venturi housing principle.

Patented Technology

Our patented filter housing has a smooth reduction in cross sectional area as it shrouds the filter and tapers 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. Further details can be read in the Technology and Filters pages.

Carbon Twin Air Ducts

The biggest restriction in the stock system is the location of the feed in comparison to the orientation of the turbo inlets. The feeds are at the front of the car and the turbo inlets face the rear of the car. We have designed the air ducts with an additional opening at the top and introduced a secondary feed where cold air is taken from the scuttle panel. By using both the the OEM air feeds and the additional air feeds, our system is able to flow with a higher rate as well as provide a less tortuous flow path to the turbos.

EPDM Rear Feeds

To ensure that the intake is fully sealed, the secondary air inlets on the carbon ducts seal to these EPDM feeds which then route to the scuttle panel area. Once the hood is closed, the scuttle area is sealed off from the engine bay therefore these feeds are able to provide the intake with a supply of ambient air. A pre-cut centre section of the OEM hood seal is provided to allow space for these EPDM feeds to be installed.

Carbon Engine Cover

Since our filter housings have been designed for maximum volume, the OEM engine cover no longer fits into place. So we have produced a modified cover which finishes off the engine bay, covering the engine hardware for a finished aesthetic. We have allowed for gaps between the engine cover and the intakes so that the heat coming off the engine can easily dissipate rather than soak into the intake system.

The complete system comes together to provide an intake which improves on the stock airbox in performance, aesthetics and sound.

Performance

Dyno Testing

This intake has been independently dyno tested by MSL Performance in the UK. Tests were done back to back against the stock airbox and several runs were taken with each configuration. The car tested was without charcoal filters in the stock airboxes. The dyno results show a consistent gain throughout a large part of the RPM range which can be attributed to the turbos reaching peak boost earlier and with a lower wastegate duty cycle due to the higher efficiency of the intake system. The performance gain translates on the road to increased part throttle and full throttle response with the car pulling much more eagerly to the redline.

Fitment

Eventuri’s Warranty

For information on Eventuri’s warranty terms and conditions, please click here.

Purchase Disclaimer: You are hereby informed and warned to check your local, state, and federal laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts. Bolt Motorsports does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Bolt Motorsports will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls. In accordance with local laws and regulations, Bolt Motorsports will not ship parts to locations where usage or installation of said part would be in violation of the aforementioned acts.