Eventuri Carbon V1 Intake System for G20 BMW M340i and G22 BMW M440i

Eventuri Carbon V1 Intake System for G20 BMW M340i and G22 BMW M440i

The BMW G20 B58 Eventuri intake has been designed to provide the turbo with a less restrictive airflow while maintaining low inlet temperatures. For turbocharged engines, heat and volume are key factors in intake design. In the G20, the intake system is positioned near the exhaust manifold, which leads to rapid heat soak in the engine bay. High temperatures negatively affect performance as the turbo must build boost with heated, less dense air. To keep intake air temperatures (IATs) low, a fully sealed intake is necessary. However, the stock setup has only one air feed, which can be restrictive. During development, Eventuri identified an additional opening into the wheel arch area and incorporated a secondary feed into their airbox. Additionally, their sealed airbox includes a heat shield with gold reflective backing to minimize heat transfer from the exhaust manifold. To maximize volume, the airbox is made as large as possible, with a recess for potential strut braces. The stock convoluted intake tube is replaced with a smooth, larger carbon tube, starting with an internal diameter of 111mm (4.4″) and tapering down to match the turbo inlet, providing a smooth path for airflow. Eventuri also uses a custom high-flow dry filter, ISO tested for filtration performance, with a larger filtration area than the stock filter.

Dual Feed Carbon Airbox

• Crafted from prepreg carbon fiber, the airbox is designed with two primary objectives: to seal the filter from engine bay heat and to provide a dual cold air feed. Positioned next to the exhaust manifold, it’s essential that the filter remains fully sealed, so the airbox is engineered to encapsulate the filter while offering a large internal volume. A laser-cut plate with a rubber sealing strip secures the intake tube to the airbox, ensuring heated air does not enter. To further reduce heat soak, an additional heat shield with a gold reflective layer on the exhaust manifold side is incorporated to effectively combat radiant heat transfer.
• A fully sealed airbox can present the challenge of restricted cold air intake. The stock airbox pulls air from a single duct extending to the front bumper. During development, Eventuri identified an additional source of cold air—a gap between the wheel arch and the chassis, where the airbox sits. To utilize this extra airflow, they designed a scoop at the back of the airbox that extends into the wheel arch, visible behind the front wheel after installation. This second air feed allows the turbo to pull air from a larger area, effectively reducing restriction.

Carbon Inlet Tube

• The G20 B58 OEM airbox system was updated in cars produced after November 2018, replacing the airflow sensor with a temperature sensor in the inlet tube. Prior to this update, all airbox systems used an airflow sensor. As a result, Eventuri offers two variations: the V1 intake, which includes an inlet tube designed for the MAF (airflow) sensor, and the V2 intake, for cars built after November 2018, which accommodates a temperature sensor.
• The stock inlet tube features a flexible and convoluted section to accommodate engine movement, but this design introduces the potential for turbulence due to multiple surfaces that can create eddies. Eventuri replaces this with a smooth carbon tube, which also has a larger internal volume. Unlike many aftermarket intakes, Eventuri maximized the size of the intake tube. The OEM inlet tube has an internal diameter of 80.8mm (3.2″) at the filter end, while their tube for cars built after November 2018 has an internal diameter of 109mm (4.3″), representing an 82% increase in cross-sectional area. The tube tapers smoothly down to the stock turbo inlet, ensuring airflow remains as laminar as possible. It also includes CNC-machined fittings for the temperature sensor and breather adapter.

Bespoke Cone Filter

• Eventuri’s cone filter is constructed from a double-layered non-woven mesh material, ISO tested to ensure filtration meets OEM standards. The filter is cleanable and highly stable at elevated temperatures, with a urethane base material. It features an internal flow-guiding cone that helps direct airflow and reduce the possibility of a stagnation point in the center of the filter. Additionally, the filter offers a significantly larger surface area compared to the stock panel filter, improving overall airflow efficiency.

Features

• Improved performance
• Lower IAT’s
• Dual feed airbox
• 100% prepreg carbon construction

Kit Contents

• Bespoke high flow dry cone filter
• Carbon airbox with dual feeds
• Carbon inlet tube
• CNC machined breather adapter
• CNC machined temperature sensor mount
• Heat shield with gold reflective backing
• Laser cut stainless steel brackets
• Silicon coupler with OEM specification clamps

Applications

• BMW M340i: G20 (2019+) – 3.0L turbocharged I6 – B58
• BMW M440i: G22 (2021+) – 3.0L turbocharged I6 – B58

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.