How do you replace intake manifold 2006 Mazda 3 2.3L?

To replace the intake manifold on a 2006 Mazda 3 2.3L, first, disconnect the negative battery terminal and remove any components blocking access, such as the air intake duct and throttle body. Next, disconnect the electrical connectors and vacuum lines attached to the manifold, then unbolt it from the engine block. Carefully lift the old manifold off, clean the surface, and install the new manifold with a new gasket, ensuring all connections are reattached before reassembling any removed components. Finally, reconnect the battery and start the engine to check for proper operation.