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

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

The revised G8X intake, now designed to accommodate the CSL strut brace, has been introduced after extensive research and development. This intake system not only surpasses the performance of the stock M3/M4 but is also compatible with high-powered builds exceeding 1000hp. The redesign involves a complete overhaul, from the airboxes to the turbo inlets, with the primary goals of minimizing pressure loss, maximizing flow rate, and maintaining low inlet temperatures. The available space has been optimized to house two custom-made filters, offering a 40% larger filtration area compared to the stock system. These filters are housed within patented Venturi housings, which efficiently channel air toward the turbo inlets. The inlets themselves feature a cross-sectional area up to 160% larger than stock, with an advanced dimpled inner surface design that reduces frictional losses and creates an air cushion along the wall surface, allowing for higher flow rates and reduced pressure loss. This design enables the turbos to draw air with less resistance, lowering the wastegate duty cycle and improving overall performance.

The Eventuri Difference

• The G8X M3/M4 Eventuri system utilizes Variant’s Patented Carbon Fiber Housings paired with their Gen 2 bespoke filters. This combination creates an aerodynamically efficient pathway for airflow from the filter to the turbos. It’s important to note that this system stands apart from conventional cone filters with heat shields, as it features a unique design that harnesses the Venturi effect and maintains laminar flow conditions. This innovative approach reduces drag on the turbo, resulting in optimized performance.
• The intake system for the Eventuri G8X M3/M4 is comprised of meticulously engineered components designed to serve distinct purposes, all manufactured to the highest standards. Variant utilizes 100% pre-preg carbon fiber, without any fiberglass, allowing for a seamless internal surface that ensures smoother airflow throughout the system. This attention to detail and high-quality construction contribute to the superior performance of the intake system.

Filter Housing Assemblies

• The filter housings of the Eventuri intake system feature Eventuri’s specially designed second-generation filters, complemented by aluminum inlet cowls and stainless steel brackets. These components work together seamlessly to create a cohesive airflow path. The carbon pod encloses the filter in a streamlined manner, guiding the airflow smoothly towards the tube section that connects to the turbo tubes. This design deviates from the OEM airbox setup, where airflow undergoes multiple direction changes. In contrast, our system allows for a more direct path, with air entering the front of the filter housing and transitioning seamlessly into the tube section. This optimized flow path results in reduced turbulence and drag, enabling the turbo to operate with improved efficiency.

Bespoke Cone Filter

• To achieve the highest possible flow rate, a new filter element was designed to utilize the available space in the engine bay efficiently. This new filter has an outside diameter of 192mm or 7.6 inches. In flow testing conducted with a housing featuring a 4-inch opening, the filter demonstrated an impressive flow capacity of up to 900 cubic feet per minute (CFM) at 28 inches of water column (H2O) pressure. The filter medium undergoes ISO testing to ensure its filtration performance meets OEM standards. It is constructed to be dry, eliminating concerns about oil contamination. The filter is equipped with signature flow cones, which optimize the Venturi housing principle and further enhance airflow dynamics.

Patented Technology

• The patented filter housing features a gradual reduction in cross-sectional area as it surrounds the filter and narrows towards the tubing. This specific geometry harnesses the Venturi effect, causing the airflow to accelerate while maintaining laminar conditions. The design can be likened to a large velocity stack. To better illustrate the distinction between Eventuri’s patented design and a regular intake system, a diagram is provided below. Their custom-made filters contribute to the smooth flow of air through the housing and help maintain an even velocity profile as the airflow exits the housing.

Turbo Inlets

• The turbo inlets represent the primary bottleneck in the stock system. In the case of the G8X M3/M4, each turbo has its own inlet, and we have successfully enlarged both of them. This expansion enables the turbos to draw in air with reduced restriction, resulting in quicker spooling. A visual comparison of the sizes can be observed in the accompanying photos. While the advantages may be marginal for a stock vehicle, we anticipate that these larger inlets will provide greater benefits in applications with higher levels of tuning, particularly when target boost pressures are elevated.
• Eventuri 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.
• Considerable research and development efforts were invested in simulating various sizes and shapes until an optimized version was identified, which demonstrated a higher flow rate through the inlets compared to a smooth surface. The application of such intricate dimples was made possible by employing advanced manufacturing techniques for the inlets, as traditional methods would not have provided the required accuracy. The presence of dimples creates an “air cushion” effect over the surface of the inlet, allowing the main body of air to flow with reduced friction through the tube into the turbo. This leads to a more uniform velocity profile in a dimpled tube, resulting in higher velocities under the same boundary conditions. Computational fluid dynamics (CFD) simulations showcase the recirculation patterns within the dimples and the increased velocity within the dimpled tube.

Carbon Ducts

• For complete sealing of the intake system, the filter housings are carefully connected to carbon ducts that channel cold air from the original entry points located behind the headlamps. Crafted from pre-preg carbon fiber, these ducts effectively block the transfer of engine bay heat into the filters. Unlike mere heat shields, the ducts provide superior performance by maintaining an airtight seal. Several meticulous details have been incorporated into the design of the ducts, including precision-machined mounts for secure attachment to the stock airbox locations and intricately laser-cut bracket work. These thoughtful elements ensure optimal functionality and integration of the intake system.

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. Our 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.

Dyno Testing

• The independent dyno testing conducted by BR Performance in Belgium confirms the performance enhancements of this intake. The tests involved direct comparisons between the stock airbox and the Eventuri system, with multiple runs performed for each configuration. The vehicle used for testing was without charcoal filters. The results were carefully analyzed, considering the best outcomes achieved with both the stock airbox and the Eventuri system. The dyno results demonstrate consistent performance gains across the entire RPM range. These gains can be attributed to the earlier and more efficient peak boost achieved by the turbos, resulting in a lower wastegate duty cycle. It’s worth noting that despite the higher dyno cell temperatures observed during the Eventuri tests rising from 11.8 deg C for the stock system tests to almost 16 deg C, the performance improvements remain evident. On the road, these gains translate into enhanced part throttle and full throttle response, with the vehicle exhibiting a more eager acceleration throughout the rev range.

IAT Testing

• In turbocharged vehicles, excessive engine bay heat can pose a performance challenge if the intake system fails to effectively seal against it. Even with the presence of intercoolers and charge coolers, minimizing Inlet Air Temperatures (IATs) becomes crucial, as these cooling devices’ efficiency ratio is influenced by the incoming air temperature, consequently impacting the outgoing air temperature. The use of open cones, even with heat shielding, can lead to the ingestion of hot air from the engine bay, thereby restricting performance. However, Eventuri’s fully sealed system addresses this concern while ensuring an unrestricted flow path with larger volumes. To demonstrate the effectiveness of the system, thermocouples were utilized to log air temperatures just before each turbocharger. A comparative analysis was conducted between the stock system and the Eventuri intake on the same day, under identical ambient conditions. The M3 vehicle underwent heat soak and was subsequently accelerated from 30mph to 90mph in 6th gear to assess temperature variations throughout each run. At 90mph, the throttle was released, followed by brake application to reduce the speed to 30mph, after which the car accelerated again 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
• Gloss or Matte 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.