You need to install the upper
Intake Manifold gaskets to the lower intake manifold and install the fir tree retainers to retain the upper intake manifold gasket position and the upper intake manifold, apply thread lock to the bolt threads, install the throttle body, the intake manifold tuning valve and the EVAP purge solenoid valve, connect the map sensor electrical connector, install the engine harness bracket retaining bolt, connect the ETC electrical connector, install the brake booster vacuum hose to the intake manifold, connect the intake manifold tuning valve electrical connector, the PCV line to the top of the intake manifold and the EVAP canister purge line, and then install the intake manifold insulator, the air cleaner outlet duct, and the fuel injector sight shield.