Would having a site map help my forum get listed better? Does vb have a sitemap installed when you first install it? If you could check my url is - www.street-car.net cheers
A sitemap will help but dont expect results right away. Vbulletin doesnt come with a sitemap but you can get one at vb.org
Sitemaps will help getting your form indexed faster. In particular if you make sure they just include the form threads/posts and not e.g. also user profiles etc.
This is the one that I use: http://www.vbulletin.org/forum/showthread.php?t=184573 IMO, a site map is essential for forums. The number of indexed pages for my forum went up sharply after I started using a sitemap.