Im with these guys. I run the Ultra welded and they are nice sounding mufflers. However my video camera doesn't pick up the deep tone for some reason. Around 0:44 in the video it picks up a little bit of the deep tone.
[ame="http://www.youtube.com/watch?v=TYdeKPIzHt4"]YouTube - Cuda with Dynomax Ultras "welded"[/ame]