more than popping in MY exhaust

[nonovurbizniz]

you should be able to shake the exhaust from underneith it and locate where it's banging...

Then try using a prybar to get it to sit in a position that doesn't make it bang... usually you'll have to bend a hanger or two or lossen all the connection points... then re-align it and tighten them from front to back...

But like has been mentioned... If you didn't re-install all the hangers.. YES that will cause it to vibrate much more than it should.