yeah, the right side can is a straight shot for exhaust flow, and the left has to take a curve, so it has less "carbon"(?) heating it.Thanks for understanding that I'm not trying to pick on you about this.... merely trying to cover all the bases, to find out why it happened.
I take it you are suffering the same sort of deal as the person with the MIVV cans? the right side can is suffering/discoloring more than the left?