There seems to be more than one problem; all seem to be typing mistakes. This is correct: Charged air reduces the temperature of the compressed air in the intake manifold, permitting a denser charge of air to be delivered to the engine because its density is reduced. -- Grammatically yes, though it doesn't match my idea of the physics of the operation.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.