Top Speed's Cat Back System Installation

[sjbox]

Had the TSPro exhaust installed without any bypass/delete pipes and now have the infamous drone problem. Looking at getting the "catless test pipe", also from TSPro. Can someone help me with other parts that I need to get along with the test pipes?

While installing the exhaust, my mechanic had to cut the C-pipe (or is it called U-pipe?) between the exhaust and secondary cats because the angle wasn't right between the exhaust and secondary cats with the C-pipe as is.

Now, if I am replacing the secondary cat section with the test pipes, do I need a new set of C-pipes? And, what's this clamp business?

Thanks!