I have been on autospeed (a really really good online auto ezine with lots of tips) anyhow, here are some wind tunnel tests for the FD:
http://autospeed.com/cms/A_108677/article.html
Top find mate.......:Ladys-man
Have read that before mate, i particularly like the fact that the spolier actually makes things worse than if it were fitted lol.....
Couldn\'t believe also how much the front lip makes a difference :D