Sorry for the crappy picture links, but I dont have any pics of mine before/after..

Theres a bar going across the Outlet of the supercharger, limiting the size of the outlet.
http://t0.gstatic.com/images?q=tbn:A...XXn0Bn0e4j&t=1
see the bar going across the middle of the supercharger...that the H bar.

Now, when you port the outlet, you also typically remove the H bar...here it is without the H bar.
http://www.zzperformance.com/products_img/162_1.jpg