AEM Induction – AEM DryFlow Air Filter for 2013-2018 Ford Focus ST 2.0L

AEM was one of the first companies to design performance aftermarket induction systems with specific tube lengths and diameters. The design took advantage of pressure waves in the inlet tract. The tuning of the inlet tract dimension creates more control over the RPM range being affected. AEM began to explore the advantages of cooler air on combustion efficiency in the mid nineties and coined the phrase Cold Air Intake. AEM worked with K&N in 1999 to design conical air filters with built in air horns at the filter base to greatly enhance air flow into the inlet duct. AEM developed the first dual chamber intake kits designed to generate more power over a broad RPM range. AEM designed a unique air bypass valve in order to avoid hydro-lock situations for systems where the filter is low enough to potentially encounter water. AEM created one of the first hybrid induction systems for cars with engine swaps. AEM has developed an electronically tuned air intake solution to MAF sensor scaling problems.