[PAUL SS]

Originally Posted by patternpilot

I disagree that the cover does nothing. If you look at it , it has an insulation blanket on it that lays on the intake manifold. I would assume that its purpose is to insulate the manifold from the engine compartment heat. We put cold air intakes on and then expose the manifold to this heat? Makes no sense to me. I say leave it on for its insulation factor.

Heat rises and there will be a lot of heat coming off the engine and the exhaust manifolds. That engine cover is like a trap that will catch all that rising heat. For the public in general it does it's job of eliminating noise.