A brake booster includes an atmosphere chamber, a working chamber, a valve assembly, and an air passageway. The atmosphere chamber includes an air inlet, and the working chamber is in fluid communication with the atmosphere chamber. The valve assembly is positioned between the atmosphere chamber and the working chamber, and the valve assembly includes a plunger configured to cooperate with a valve seat to selectively enable or prevent fluid flow from the atmosphere chamber to the working chamber. The air passageway is defined within the atmosphere chamber between the air inlet and the valve assembly. The air passageway is void of any springs.