Thought I would post this here also.
Getting as much air into the intake as possible is always a good thing. I'm sure a few of you have a Vararam as do I. This was a little experiment that I did that worked out well so far. Try it if you have the time and let me know what you think.
I made mine outta 20gauge trim coil stock but foam board or sign board will work also.
In this picture you can see the shape. The ribs are to help direct the air and strengthen the pan.