I bought one of the valve cover breathers for my car before I was aware of the issues it caused, but loved the way it looked. I decided to take the filter of and plug the small hole on the bottom with some epoxy to prevent air flow and it works great and and keeps the look of the breather. If I ever wanted to make the breather funtional again I could very easily dig out the epoxy with no damage. Just a thought for you if you wanted to continue running it.