Eventuri BMW F97 X3M / F98 X4M Black Carbon Intake SystemThe X3M X4M intake setup from BMW although awkward at first sight, is a very well designed system in the given space available. The flow path from the filters to the turbo inlets is very direct and does not change direction as abruptly as the usual OEM airbox designs. So instead of a complete redesign we focused on improving the OEM airbox with less restrictive flow and improved temperature efficiency. We have developed replacement drop in filters