To remove the air bypass valve on 2007 and earlier models, first remove the engine cover (if equipped), then disconnect the vacuum hose from the air bypass valve, remove the air bypass valve mounting bolts, and lift the valve up and disconnect the turbocharger inlet duct from the valve. For 2008 and later models, disconnect the vacuum hose and air bypass hose from the air bypass valve, remove the air bypass valve mounting bolts, and then remove the air bypass valve. Installation is the reverse of removal.