Shop BMW Intake System - RPI
The BMW RPI Scoops allows more ambient airflow to reach the stock air box. The stock airbox is a great foundation for intake modification because it allows the engine to breath cool air from the outside unlike aftermarket induction systems. Other aftermarket intake systems rely on questionable testing methods (hood open) and suffer from heat soak which causes the BMW DME to pull ignition timing. Expect a 5-7hp gain with ram induction and a 6-10whp with the ram induction kit (including filter).