The E39 M5 Eventuri system uses our patent-pending carbon fiber housings with our custom-built Gen-2 filter providing an aerodynamically efficient airflow path from the filter to the inlet pipes. Not just another conical filter with a heat shield, but a unique design that recalls the Venturi effect.
Performance Increase: 8-12 HP, 8-10 ft-lbs
The E39 M5 Eventuri system uses our patent-pending carbon fiber housings with our custom-built Gen-2 filter providing an aerodynamically efficient airflow path from the filter to the inlet pipes. Not just another conical filter with a heat shield, but a unique design that recalls the Venturi effect.
Performance Increase: 8-12 HP, 8-10 ft-lbs
The BMW E39 M5 Eventuri intake is designed to offer a complete solution as an upgrade to the stock airbox system. Our goal was to develop an intake system for the S62 engine that would work with the stock ECU map and MAF sensors and produce a genuine improvement in the driving experience. With our patent-pending venturi housing, we ensured that the airflow remained as laminar as possible. Additionally, the addition of a true cold air supply by adding integrated scoops with the front fog lamps results in the lowest possible inlet air temperature. This results in an optimized intake system that consistently delivers significant performance gains.
The standard airbox draws air from behind the front bumper, so the flow path is long, which introduces resistance into the system. Additionally, the cuboid nature of the airboxes creates turbulence where the transition to the circular MAF tubes occurs. Our system replaces the airboxes with venturi housings that flow much more efficiently to the circular MAF tubes while maintaining laminar flow. The filters draw air from a shielded portion of the engine bay that is saturated with cold air from the integrated fog lamp intakes. By keeping inlet temperatures low and improving the efficiency of the flow path, the engine is able to produce more power. The dynamometer graph below shows the stock airbox vs. Eventuri intake system on a standard car with stock map and exhaust. The dynamometer tests were performed back to back on the same day with the bonnet closed.
The Eventuri E39 M5 intake system is made up of a number of components designed to perform a specific purpose and manufactured to the highest standards. Here are the details for each component and the design ethic behind them:
Each intake system consists of:
Carbon intake housing assemblies
The filter housings comprise the high-flow filters, aluminum canopies, and the carbon pods themselves. The carbon pods wrap around the reverse-mounted filter and gently shape the airflow to the MAF tubes. This gentle reduction in cross-sectional area mimics the Venturi effect where airflow accelerates while maintaining laminar conditions. Think of it as a large velocity stack: Below is a diagram showing how our patent pending design compares to a typical intake system. Our custom filters help the airflow move through the housings and allow for a smooth velocity profile as the airflow exits the housings. Further details can be read in the Technology and Filters pages.
Fog light ducts
To supply cold air to the vents we have designed replacement fog light surrounds with integrated ducting. The cold air intake area has been maximised for the given shape and size of the surround and the ducting passes into the supplied neoprene hoses. As the car is moving, ambient air is forced into these ducts which are connected to the neoprene hoses to transfer the airflow directly to the vents. This ensures that the vents are not bathed in heat and the engine is able to draw in ambient air.
