RPi's Ram Air Induction 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 boxes, expect a 10 - 15 whp gain with 70mph airflow. RPi's Ram Air come with a 30-day money back guarantee.

Fits E60 M5

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