AEM's Cold Air Intakes (CAI) for the new Civic Si feature CNC mandrel-bent 6061 piping, tuned in both length and diameter to maximize power. Every AEM cold air intake is powder coated in a gunmetal finish and has TIG-welded fittings and brackets. For filtration, AEM utilizes its new reusable lightweight urethane, four-layer cotton-gauze filter that features a redesigned air horn for improved performance. AEM's cold air intake (CAI) sits in the front bumper opening to draw in as much air as possible, giving you a noticeable power increase! AEM's dynamometer test results show a 8 HP gain at 7000 RPM. AEM cold air intake kits ship complete with installation hardware, comprehensive instructions, and AEM decals.
NOTE: This kit is street legal in all 50 US states. CARB EO Number: D-670-21