Here's the thread on what I did. :
http://www.zggtr.org/index.php?topic=10501.msg128285#msg128285This is excellant. Have you had them long enough to try them in the heat to bring more air in?
I've had these on the bike for a while. They (IMHO) are more adjustable than any of the others that I've seen, so yes, they can bring in more air when/if needed.