Race Precision Ram Air Induction Kit V3 BMW E90/E92 335i M3
RPi's Ram Air Scoops converts your factory intake system into a ram air type. Other aftermarket induction kits mostly suck in hot air causing a loss of performance. The use of heatshields are not very affective as heat shields mainly work to block radiant heat. Utilizing the stock intake box, our ram air scoops push outside air into the stock air box, providing improved airflow to the well designed OEM intake system. Expect a 4-6whp gain (Dyno Dynamics w/ Patterson 13kcfm fan at 8ft, 2.5degree fan angle on 2011 M3).