So what is a cold air induction (CAI) kit?. Obviously results vary with vehicle application and ambient air temperatures. AEM Cold Air Induction Kit for Mazda RX-8 In Blue. Equipped with a special AEM cone filter (manufactured by K&N) and water "resistant sock" (seen in the installation picture above) to prevent severe water saturation of the main filter prolonging filter life during wet or dirty driving conditions.
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