EVENTURI EVE-Z3MABX-CF-INT Hybrid Carbon Airbox with Full Intake for BMW Z3 M Roadster / M Coupe (E36)

Description EVENTURI EVE-Z3MABX-CF-INT Hybrid Carbon Airbox with Full Intake for BMW Z3 M Roadster / M Coupe (E36)

The EVENTURI Hybrid Carbon Airbox System is a complete intake solution developed specifically for the BMW Z3 M Roadster and M Coupe equipped with the S54 engine. Combining the distinctive induction sound associated with CSL-style airboxes and the drivability advantages of retaining the factory MAF sensor, the system delivers enhanced performance without requiring ECU remapping.At the core of the system is Eventuri's patented Venturi carbon fiber airbox technology, engineered to optimize airflow efficiency and maintain laminar flow characteristics throughout the intake path.

CFD-optimized geometry, precision-engineered trumpets, and a high-flow filtration system work together to reduce pressure losses and improve airflow delivery to the throttle bodies.The airbox assembly is manufactured from prepreg carbon fiber and incorporates thermoplastic intake trumpets with stainless steel reinforcement rings for long-term dimensional stability.

Complete package

The complete package includes all components required for installation, including carbon fiber intake assemblies, high-flow filter, breather connections, brackets, and couplers.The full Hybrid Airbox with intake configuration consists of:

• Carbon Fiber Main Airbox
• Carbon Fiber Airbox Snorkel with MAF tube
• Thermoplastic Molded Trumpets with Stainless Steel Reinforcement Rings
• Carbon Fiber Filter Housing
• Bespoke Dry High Flow Filter
• Stainless Steel Brackets and Flanges
• CNC Machined Breather Adapters
• Custom EPDM Flexible Coupler
• Silicon Couplers
• Crankcase Breather Hose
• Additional Vacuum Tubing

Specifications:

• Performance Increase (OEM ECU Tune): 20-22 HP
• Torque Increase (OEM ECU Tune): 8-13 ft-lb
• Main Airbox Material: Prepreg carbon fiber
• Trumpet Material: Thermoplastic with stainless steel reinforcement rings
• Filter Type: Bespoke dry high-flow filter
• MAF Sensor Compatibility: OEM MAF retained

Main airbox assembly

The Main airbox section houses the 6 trumpets as well as the breather system connectors. Made from prepreg carbon fiber, the airbox has been designed to resonate under load and produce the sought after CSL sound. One of the challenges of the construction was to ensure the long-term reliability of the interface between the trumpets and the airbox. This was resolved by using mechanical fasteners and gaskets to ensure an airtight seal which would not be affected by heat cycles and vibrations. A similar method was also used for the breather adapters.The trumpets have been made with thermoplastic.

Airbox snorkel

The snorkel or lid of the airbox smoothly channels airflow from the intake to the trumpet area. This section also incorporates the MAF tube section where the OEM sensor is secured to a CNC machined MAF boss. The snorkel secures to the main airbox section using custom made screws which cut into plastic securing clips ensuring that they do not come loose under vibration.

CFD optimized design

The overall shape of the airbox was optimised over several iterations using CFD simulations to ensure the trumpets had adequate flow without suffering from starvation due to restrictions in geometry or turbulence.

Intake housing assembly

The filter housing comprises of our bespoke generation 2 filter, stainless steel bracket and the carbon fiber housing. The carbon pod shrouds the reverse mounted filter and smoothly shapes the airflow down to the plenum. This is a key feature of the intake design where we have removed the tortuous flow path of the OEM airbox and therefore reduced the pressure loss through the whole system. This also ensures that the airflow is smooth when entering the MAF tube section of the airbox to allow the sensor to operate without errors.

Patented technology

Patented filter housings have a smooth reduction in cross sectional area as they shroud the filters and taper down to the tubing. This geometry invokes the Venturi effect where the airflow accelerates whilst maintaining laminar conditions. Bespoke filters aid the airflow moving through the housings and allow for an even velocity profile as the airflow exits the housings.