Every part of an engine has its individual function and the intake manifold’s function is to distribute an air-fuel mixture to the cylinders. The balance in delivery supports combustion and helps the engine to operate optimally, economizing on fuel consumption, while lowering emissions. Moreover, the intake manifold controls throttle response and dictates the smooth operation of the engine. For an intake manifold to work correctly it has to be properly designed, functioning intakeed and optimizing engine reliability across long periods of operation.