Eventuri V2 Matte Carbon Intake System for G8X BMW M2 / M3 / M4

Eventuri V2 Matte Carbon Intake System for G8X BMW M2 / M3 / M4

Introducing the newly revised G8X M3/M4 intake, specifically designed to accommodate the CSL strut brace. This intake system has undergone extensive research and development to outperform the stock M3/M4 setup while supporting high-powered builds exceeding 1000hp. The comprehensive redesign covers all components, from the airboxes to the turbo inlets, with a focus on minimizing pressure loss, optimizing flow rate, and maintaining low inlet temperatures. Every available inch of space has been maximized to include two custom-made filters, offering a 40% larger filtration area than the stock system. These filters are housed in patented Venturi housings, ensuring efficient air channeling toward the turbo inlets. The inlets, with cross-sectional areas up to 160% larger than stock, feature a dimpled inner surface design that reduces frictional losses by creating an air cushion along the wall surface. This allows for higher flow rates with reduced pressure loss, enabling the turbos to draw air more efficiently, lowering wastegate duty cycles, and enhancing overall performance.

The Eventuri Difference

• The G8X M3/M4 Eventuri system incorporates Variant’s Patented Carbon Fiber Housings in conjunction with their Gen 2 bespoke filters. This unique combination creates an aerodynamically efficient pathway, guiding the airflow seamlessly from the filter to the turbos. It’s important to highlight that this system distinguishes itself from conventional cone filters equipped with heat shields. Instead, it features a distinctive design that capitalizes on the Venturi effect, optimizing airflow and maintaining laminar flow conditions. By reducing drag on the turbo, this innovative approach unlocks the full potential of the system, resulting in optimized performance.
• The intake system designed for the Eventuri G8X M3/M4 comprises meticulously engineered components, each serving a specific purpose and crafted to the highest standards. Variant utilizes 100% pre-preg carbon fiber in the construction, completely excluding fiberglass. This exclusive choice of materials enables the creation of a flawless internal surface, ensuring the smoothest airflow possible throughout the system. The meticulous attention to detail and the utilization of top-notch construction techniques contribute to the exceptional performance of the Eventuri intake system.

Filter Housing Assemblies

• The Eventuri intake system features specially designed second-generation filters housed within filter housings. These filter housings are accompanied by aluminum inlet cowls and stainless steel brackets, working together to establish a cohesive and streamlined airflow pathway. A carbon pod encloses the filter, ensuring a smooth and uninterrupted flow of air towards the tube section that connects to the turbo tubes. This design deviates from the conventional OEM airbox setup, where airflow undergoes multiple direction changes. Instead, the Eventuri system provides a direct and efficient path for air to enter the front of the filter housing and seamlessly transition into the tube section. By optimizing the flow path, the system reduces turbulence and drag, leading to improved efficiency and performance of the turbo.

Bespoke Cone Filter

• In order to maximize the flow rate, Variant developed a new filter element that effectively utilizes the available space in the engine bay. This innovative filter boasts an outer diameter of 192mm or 7.6 inches. During flow testing, conducted with a housing featuring a 4-inch opening, the filter demonstrated exceptional performance with a flow capacity of up to 900 cubic feet per minute (CFM) at 28 inches of water column (H2O) pressure. To ensure filtration meets OEM standards, the filter medium undergoes ISO testing. It is designed to be dry, eliminating concerns about oil contamination. Additionally, the filter incorporates signature flow cones, optimizing the Venturi housing principle and further enhancing the airflow dynamics.

Patented Technology

• The patented filter housing employed by Variant features a gradual reduction in cross-sectional area as it surrounds the filter and tapers towards the tubing. This specific geometry effectively harnesses the Venturi effect, leading to an acceleration of the airflow while maintaining laminar conditions. This design concept can be likened to a large velocity stack, optimizing the intake process. To illustrate the distinction between Variant’s patented design and a regular intake system, a diagram is provided below. The custom-made filters incorporated within the housing play a crucial role in ensuring the smooth flow of air and maintaining an even velocity profile as the airflow exits the housing.

Turbo Inlets

• The turbo inlets are a significant limitation in the stock system, particularly in the case of the G8X M3/M4. Each turbo is equipped with its own inlet, and Variant has successfully increased the size of both inlets. This enhancement allows the turbos to draw in air with less restriction, resulting in faster spooling and improved performance. A visual comparison of the sizes can be seen in the provided photos. While the advantages may be minimal for a stock vehicle, it is anticipated that these larger inlets will deliver even greater benefits in applications with higher levels of tuning, particularly when target boost pressures are raised.
• The design could have been considered complete at this stage, but Variant aimed to push the boundaries further and introduce an innovative dimpled pattern on the inside surfaces. The introduction of small dimples is based on the theory that they can enhance flow rate by reducing frictional pressure losses within a tube. This novel approach seeks to optimize the airflow dynamics and further improve the overall performance of the system.
• Extensive research and development efforts were dedicated to simulating different sizes and shapes, ultimately identifying an optimized version that exhibited superior flow rates through the inlets compared to a smooth surface. The incorporation of intricate dimples was made possible by leveraging advanced manufacturing techniques, as traditional methods would not have achieved the required level of precision. The presence of these dimples creates an “air cushion” effect on the inlet surface, facilitating smoother airflow through the tube into the turbo with reduced friction. Consequently, a more uniform velocity profile is established within the dimpled tube, resulting in higher velocities under consistent boundary conditions. Computational fluid dynamics (CFD) simulations provide visual representations of the recirculation patterns occurring within the dimples and the amplified velocity within the dimpled tube.

Carbon Ducts

• To ensure a fully sealed intake system, the filter housings are meticulously connected to carbon ducts that guide cold air from the original entry points situated behind the headlamps. These ducts are expertly crafted from pre-preg carbon fiber, delivering effective insulation against the transfer of engine bay heat into the filters. In contrast to simple heat shields, the ducts provide an enhanced level of performance by maintaining an airtight seal. The design of the ducts incorporates several meticulous details, including precision-machined mounts that secure them to the stock airbox locations and intricately laser-cut bracket work. These thoughtful elements contribute to the optimal functionality and seamless integration of the intake system.

Carbon Main Tube

• The filter housing on the right side of the engine is linked to an extended carbon tube that directs the airflow towards the turbo inlet. This carbon tube serves as a replacement for the stock version, featuring a smoother internal profile and a larger volume. Starting with an internal diameter of 4″ at the filter side, the tube maintains this size throughout its length until it smoothly tapers down at the turbo inlet. To ensure stability, the tube incorporates integral brackets that securely hold it in a fixed position.

Dyno Testing

• The performance enhancements of this intake have been confirmed through independent dyno testing conducted by BR Performance in Belgium. The testing procedure involved direct comparisons between the stock airbox and the Eventuri system, with multiple runs performed for each configuration. Notably, the vehicle used for testing was operated without charcoal filters. Thorough analysis was conducted, considering the best results achieved with both the stock airbox and the Eventuri system. The dyno results clearly indicate consistent performance gains across the entire RPM range. These improvements can be attributed to the earlier and more efficient attainment of peak boost by the turbos, leading to a reduced wastegate duty cycle. It is important to mention that despite the higher temperatures observed in the dyno cell during the Eventuri tests rising from 11.8°C for the stock system tests to nearly 16°C, the performance enhancements remain evident. On the road, these gains manifest as improved response during both part throttle and full throttle situations, resulting in a heightened sense of acceleration throughout the entire rev range.

IAT Testing

• Excessive engine bay heat can present a performance challenge in turbocharged vehicles if the intake system does not effectively seal against it. Even with the presence of intercoolers and charge coolers, it becomes essential to minimize Inlet Air Temperatures (IATs) as these cooling devices operate based on the efficiency ratio influenced by the temperature of incoming air, thus impacting the temperature of outgoing air. The use of open cones, despite heat shielding, can result in the ingestion of hot air from the engine bay, thereby limiting performance. However, Eventuri’s fully sealed system overcomes this issue while maintaining an unobstructed flow path with increased volumes. To validate the system’s effectiveness, thermocouples were employed to log air temperatures immediately prior to each turbocharger. A comparative analysis was conducted on the same day, under identical ambient conditions, between the stock system and the Eventuri intake. The M3 vehicle underwent heat soak before accelerating from 30mph to 90mph in 6th gear to assess temperature fluctuations during each run. At 90mph, the throttle was released, followed by brake application to reduce the speed to 30mph, and then another acceleration to 90mph. This testing process was repeated three times, capturing data for both intake configurations.

Features

• Improved power and sound
• Smoother airflow
• Carbon ducts
• Carbon main tube
• 100% pre-preg carbon
• Matte or Gloss finish

Specifications

• Turbo inlet area increased up to 160%
• Filtration area increased up to 40%
• Performance Gain: 13-18hp / 12-16ft-lb (stock)

What’s Included

• Bespoke high flow dry cone filters (x2)
• Carbon inlet ducts (x2)
• Carbon intake tube
• Carbon patented venturi filter housings (x2)
• CNC machined bracket mounts and reinforcement rings
• Custom flexible hose
• Laser cut stainless steel brackets
• Thermoplastic turbo inlets (x2)

Applications

• BMW M2: G87 (2023+) – 3.0L TT I6 S58
• BMW M3: G80, G81 (2021+) – 3.0L TT I6 S58
• BMW M4: G82, G83 (2021+) – 3.0L TT I6 S58

Notes

• This item cannot be returned

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.