One of the easiest ways to get more power from your engine is to dump the OE air filter and air intake system and replace them with high-flow aftermarket parts. Factory systems are designed with priorities other than performance, like low intake noise and cost. As a result, most vehicles come from the factory with restrictive air boxes and intake tubes, and cheap paper air filters. Choose a system from our vast selection and make your engine come alive. At HKP Customs, we carry products for gas and diesel engines from K&N, Airaid, aFe, AEM and more.