BMW F40 M135i / F44 M235i Eventuri Intake System
Application: F40 M135i Xdrive, F44 M235i Xdrive, F39 X2 35iXdrive
Acceleration time: 60-130 mph reduced by 0.2 seconds
The Eventuri intake system for the BMW F40 M135i, F44 M235i and F39 X2 35iXdrive has been developed through extensive real-world testing and airflow simulations. The system features our patented Venturi housing system and an integrated Mass Air Flow (MAF) sensor section, which ensures the smoothest airflow to the turbo inlet pipe. The housing surrounds the bespoke Generation 2 dry filter, which helps shape the airflow and maintain laminar flow. The housing perfectly seals with the front duct, which has been optimized in volume to maximize airflow and minimize any restrictions.
The duct ensures that only ambient air flows to the filter, keeping intake air temperatures (IAT) constant under most driving conditions. This results in improved throttle response and allows the turbo to operate more efficiently with a lower waste-gate duty cycle.
The Eventuri Difference
The F40 M135i / F44 M235i Eventuri system utilizes patented carbon fiber housings and Generation 2 custom-made filters. This design provides aerodynamically efficient airflow from the filter to the turbochargers. Unlike other systems with a simple cone filter and heat shield, our system uses a unique design that utilizes the Venturi effect and maintains laminar flow to reduce turbocharger load.
System components
The Eventuri F40 M135i intake system consists of several components that have been specially designed to achieve specific goals and are manufactured to the highest standards:
- Carbon Fiber Venturi Housing with integrated MAF tube
- Custom-made high-flow Generation 2 filter
- Carbon Fiber Sealed Duct
- Aluminum Inlet Cowls
- 2 x Laser cut stainless steel brackets
FILTER HOUSING ASSEMBLY
The filter housing consists of the custom-designed Generation 2 filter, an aluminum intake cowl, a stainless steel bracket, and the integrated MAF section. The carbon fiber pod encases the reverse-mounted filter and directs airflow to the MAF section, which then connects to the original intake pipe. This design is much more direct than the standard air intake system, eliminating abrupt changes in airflow direction, resulting in a smoother and more efficient airflow to the turbo intake pipe.
PATENTED TECHNOLOGY
Our patented filter housing gradually reduces its cross-sectional area as the filter is shrouded and the airflow into the duct decreases. This design utilizes the Venturi effect, which accelerates the airflow while maintaining laminar flow. It can be thought of as a large velocity stack. Our custom-made filters support the airflow through the housing and ensure a consistent velocity profile as it exits.
CARBON DUCT
The duct has been completely redesigned to maximize internal volume. With the mounting points now concealed, the duct makes optimal use of the space above the slam panel. To protect against engine compartment heat, the duct features a flexible rubber lip around the opening to the filter housing, creating a tight seal while still allowing for engine movement.