Cold air intake?

I knew what you meant. I guess if you insulate them so as to keep them cooler it may help. Like I said, I mulled it over too and decided it was more than I wanted to do, not to mention when you want to do something on the engine, it would probably have to come apart. I guess if you built it so it would separate quickly it wouldn't be too bad.

They do sell complete systems like you are talking about.

As far as performance gains, I don't know if it would be drastically different than a hood scoop.