Here is a video of my custom turboback. Let me know what you think. Enjoy!!
http://videos.streetfire.net/Player.aspx?fileid=942A6E6C-A2D7-4674-A883-AB358F855303&term=mazdaspeed&p=0
http://videos.streetfire.net/Player.aspx?fileid=942A6E6C-A2D7-4674-A883-AB358F855303&term=mazdaspeed&p=0