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).
About the BMW Performance
Air Filter for BMW(Optional)
BMC air filters are designed and produced to
ensure a higher air flow than original paper filters. In F1, for example, BMC
cotton filters minimize the loss of air flow pressure passing through the air
filter; this way ensures the best conditions for full exploitation of maximum
power. Therefore the benefits of replacing the original paper filter with BMC
cotton air filter, produced using the same technology and materials as the F1
air filters, are evident.