Dinan High Flow Intake System - 2006-2010 BMW 650i"Dinan's high flow intake system for the 550i dramatically increases intake air flow volume and velocity as well as ensuring the lowest possible intake air temperatures for maximum power gains, as well as improved throttle response. The system takes full advantage of the ram air effect by adding a second air inlet in conjunction with the stock configuration, force feeding more cool, oxygen rich air to the enhanced air box. The system includes a