And the crossover section is rusting out much faster than the rest of the system. I think it is because it sees much less flow and doesnt clear out the condensed water as much as the rest of the system. (the crossover is barely going to make it 2 years it looks like). An x-pipe shuoldnt have this issue because the crossover sees continuous flow... THat's what I'll be doing next - getting a decent catted x-pipe and bolting it in.