I had my hid lowbeam burn out on the way home from CCR so I need a new one. Searching the forums here I found these guys. http://www.ddmtuning.com/ They seem like good units. Has anyone tried these on a canbus bike like my GT? They sell a error code eliminator like this http://www.ddmtuning.com/index.php?p=product&id=130&parent=85 Are these necessary?