Ok, well here is the problem... I figured it out....My hangers are in perfect shape.
When I hit a bump or turn any direction the piping hits my Rear Lower Tie bar.
I find it strange because it seems that this only happens when the weather is hot ( does the metal expand when its hot ? ).
Its kinda chilly here in NY so I dont hear the noise. Maybe I just have to tighten up the tie bar since it does get loose from time to time.
Thanks for helpin me out.