[camcojb]

Originally Posted by ratbeachracing

I haven't been around any other cars with carbon fiber valve covers and the engine running. My engine has them. Does the carbon fiber covers increase the engine/valve train sound?

I've never considered it too much, but they are louder than a cast valve cover. Sheetmetal is louder also. I went with the cast GM covers on mine; great quality and looks and as quiet as you'll get.