Eventuri carbon BMW M240i G42

Product description

BMW G42 M240I B58

Performance gain: 17-20 hp, 11-20 ft-lb

Fitment: BMW G42 M240i B58

The G42 B58 Eventuri intake has been developed to provide the turbo with a less restrictive flow path while maintaining low intake temperatures. Heat and volume are the most important considerations when designing an intake for turbo engines. In the M240i, the intake system is located next to the exhaust manifold, causing heat to quickly soak the engine compartment. High temperatures are detrimental to engine performance as the turbo would have to build boost with heated, less dense air and so the only way to ensure IATs are kept to a minimum is a fully sealed intake. However, this results in a limitation with only one supply air supply to draw air from. During development we noticed an additional opening in the wheel arch and took advantage of this by adding a secondary power supply to our airbox. Furthermore, our sealed airbox also has a heat shield with gold reflective to minimize radiant heat transfer from the exhaust manifold. To maximize volume, we have made the airbox as large as possible with a recess for possible struts. The stock convoluted intake tube has been replaced with a smooth carbon tube that is also larger in internal volume with a starting internal diameter of 111mm (4.4") that slopes smoothly down to match the turbo inlet. The tube provides a smooth path from the filter to the turbo inlet. Finally, we use a custom high-flow dry filter that is ISO tested for filtration performance and has a larger filtration area than the stock filter.