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 5 - 10 whp gain with 70mph airflow. RPi's Ram Air come
with a 30-day money back guarantee.
About the BMW Performance
Air Filter for the BMW E60 545i (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.