Log in to your Joomla Administrator panel
2. Click on ‘Content’,’Article Manager’, and click on the button ‘Options‘
3. Click on the ‘Text Filters‘ tab.
4. Go to the ‘Super Users’ and select from the dropdown – ‘No Filtering’.
5. Save the options and refresh your site.
6. If you are using TinyMCE editor, go to the editor options – Extensions menu > Plug-in Manager > Editor-TinyMCE (Tip provided by John)
7. Disable “clean up on save”. (Tip provided by Adam.)
Refreshing your site and create a new article. There is no need to throw out or change your Joomla 1.6 editor. You should be able to add iframe or any embedded html codes and the editor will not strip your code. I love Joomla again.
Visto en: cmsmind
Solo Descarga el componente y modulo para instalarlo y configurarlo en Joomla 1.6 Acá