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I've got Greddy evos and an AEM V2, the two produce an interesting sound throughout the powerband. First off, the Greddy is very quiet. My Intake makes more noise after vtec kicks in. Below that, it makes a very deep sporty sound, almost similar to some italian sports cars. My advice is to get the Intake first. Doing that will let you enjoy the sound of a growly intake noise before you get exhaust.