Quote Originally Posted by 36 sedan View Post
Welcome
JMHO, it sounds like back pressure, possibly a leaky exhaust gasket/joint, or a loose muffler baffle..
Im surprised you could hear that in the vid!!! The front right header comes a little lose on its own every so often so i need to tighten it once every 1 or 2 weeks until i can afford to buy 2 new hooker headers.