OK so i thought i had and exaust leak so i took it to the muffler shop to find out that i did not have one. The thing is i dont get it when im driving at low speed wiht my foot on the pedal it sounds like i have one but the we looked over and over and could not find one those anyone else have this problem

 

Does it sound like this???

http://www.youtube.com/watch?v=PCQHKgi0JrA

 

did you look for any fine cracks in the manifolds, they are sometimes hard to see.
Also where is the noise coming from front, mid or back?

 

Damn the truck in Frenchy's video sounds awful...what causes that? What is the rod knocking? (Insert off color joke)

 

The noise is coming from the front and i sounds something like frenchys video the thing is you can only here it inside the cabin it makes a sound like whenyou hold a pice of papper of a flag and the wind makes it flutter

 

I had a problem at the joint were the manifold joins the first pipe. The dealer replaced a donut there.