No, there aren't any vehicle specific forums located on Fuelly. This is a general question/website feedback tool, used to help Fuelly members with questions and problems using the site, and occasional general advice on how to make the most of the site/mileage/experience.
What ace said. And welcome to Fuelly. You can see what other Wrangler drivers are getting for MPG in the "Browse Vehicles" section. If you haven't found a Jeep forum I recommend you looking for one on Google, im sure youll find tons.