Eventuri Carbon Intake System for G8x BMW M3 / M4

Eventuri Carbon Intake System for G8x BMW M3 / M4

Presenting an intake which truly sets a benchmark for the BMW G8X M3 / M4 platform. Eventuri has carried out intensive R&D to develop an intake which not only improves on the stock M3 / M4 but also is future proof in its capacity to cater for high powered builds well in excess of 1000hp. Their system is a complete redesign from the airboxes to the turbo inlets with the aim of reducing pressure loss while increasing the flow rate and keeping inlet temperatures low. The Eventuri team has maximized the usage of the available space to employ 2 custom made filters with a 40% larger filtration area than stock. These are used in their Patented Venturi housings to smoothly funnel the air to the turbo inlets. The inlets themselves are up to 160% larger in cross sectional area than stock and are designed with an advanced dimpled inner surface to reduce frictional losses between the flow and the wall boundary. By allowing a “cushion” of air at the wall surface, airflow is able to move through the inlets at higher flow rates with reduced pressure loss. This allows the turbos to draw air with less resistance and therefore reduce the wastegate duty cycle resulting in higher overall performance.

The Eventuri Difference

• The G8X M3 / M4 Eventuri system uses Eventuri’s Patented Carbon Fiber Housings with their Gen 2 bespoke filters, which provide an aerodynamically efficient airflow path from the filter to the turbos. Not just another cone filter with a heat shield but a unique design which invokes the Venturi effect and maintains laminar flow conditions to reduce the drag on the turbo.

Filter Housing Assemblies

• The filter housings comprise of the bespoke generation 2 filters, aluminum inlet cowls and stainless steel brackets. The carbon pod shrouds the reverse mounted filter and smoothly shapes the airflow down to the tube section which then connects to the turbo tubes. This changes the flow path from the OEM airbox where airflow enters the front 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. This system is a lot more direct with airflow entering the front of the filter housing and and moving into the tube section without any abrupt direction changes. The result is a smoother path from the filter to the turbo inlet tube and therefore the turbo is able to function with less drag.

Bespoke Cone Filter

• In order to achieve the highest flow rate possible Eventuri designed a new filter element to make as much use of the space available in the engine bay as possible. This new filter has an outside diameter of 192mm or 7.6″ and when flow tested with a housing using a 4″ opening is able to flow up to 900 CFM at 28″ H2O. 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.

Turbo Inlets

• The biggest restriction in the stock system are the turbo inlets. The G8X M3 / M4 has an inlet for each turbo and we were able to significantly increase the sizes of both of them. By increasing their sizes, the turbos are able to pull in air with less restriction hence allowing for a quicker spool. In the following photos you can see the differences in the sizes. Although the benefit may be small for a stock car, it is expected that these larger inlets are to be more beneficial for higher states of tune where the target boost pressures are increased.
• Eventuri could have finalized the designs here however, they wanted to push the boundaries further and introduce a novel dimpled pattern to the inside surfaces. In theory, small dimples can increase the flow rate by reducing the frictional pressure losses through a tube.
• A lot of R&D went into simulating different sizes and shapes until they settled on an optimized version which demonstrated a higher flow rate through the inlets in comparison with a smooth surface. Applying such an intricate was only possible due to the advanced manufacturing technique employed to make the inlets, where traditional methods would not have given the accuracy required. The dimples create an “air cushion” affect over the surface of the inlet which then allows the main body of air to “slip” with less friction through the body into the turbo. This results in a more even velocity profile in a dimpled tube with the net affect being a higher velocity for the same boundary conditions.

Carbon Ducts

• To ensure that the intake is fully sealed, the filter housings are mated to these carbon ducts which route cold air from the stock entry locations behind the headlamps. Made from prepreg carbon fiber, the ducts ensure that the engine bay heat is blocked from entering the filters. Simply having heat shields would not work as effectively since they cannot be air tight. There are many small details designed into the ducts such as the machined mounts to secure them to the stock airbox locations and the laser cut bracket work.

Carbon Main Tube

• The filter housing on the right side of the engine is connected to a long tube to route the airflow to the turbo inlet. The carbon tube replaces the stock version and has a smoother internal profile with a larger volume. At the filter side it starts with an internal diameter of 4″ and maintains this size up to the turbo inlet where is smoothly tapers down. The tube features integral brackets which help to secure the tube in a fixed location.

Patented Technology

• Eventuri’s 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. The bespoke filters aid the airflow moving through the housings and allow for an even velocity profile as the airflow exits the housings.

Features

• Improved power and sound
• Carbon ducts
• Turbo inlet area increased up to 160%
• Filtration area increased up to 40%
• 100% pre-preg carbon construction
• Performance Gain: 13-18hp and 12-16ft-lb (stock tune)

What’s Included

• Bespoke high flow dry cone filters (2)
• Carbon inlet ducts (2)
• Carbon intake tube
• Carbon patented venturi filter housings (2)
• CNC machined bracket mounts and reinforcement rings
• Custom flexible hose
• Laser cut stainless steel brackets
• Thermoplastic turbo inlets (2)

Applications

• BMW M3: G80 (2021+) – 3.0L TT I6 S58
• BMW M4: G82 (2021+) – 3.0L TT I6 S58

Notes

• This item is not eligible for return

About Eventuri

Eventuri was founded by a team of engineers and enthusiasts with a background in Aeronautics and tuning – all sharing a passion for cars and performance. After owning various intakes over many years for their own cars and being disappointed with the gains which seldom lived up to their claims – they decided to take things into our own hands and rewrite the book. To set a new benchmark in intake design and technology, above all – to engineer systems which provide real gains and then to publish genuine figures. Their systems are extensively developed using cutting edge design, testing and prototyping methods. With a focus on performance, each design undergoes CFD analysis and is then validated at the prototype stage through volumetric airflow, intake temperature and extensive dynamometer testing. They strive to publish all the development information to illustrate the depths they go to in bringing an intake from concept to reality. Only the best materials are selected for each component – even down to the choice of fasteners and fixings in order to ensure that the quality of the end product is second to none. After many years of disappointment with the usual aftermarket intakes, they are proud to be raising the bar and creating intake systems which are setting a new standard and genuinely improve the performance of your vehicle.