This is a 2007 Cadillac CTS with a custom exhaust. From the stock cats back, “ SS pipes, Magnaflow Tru-X Pipe (part # 10790), Magnaflow dual in/out muffler (4x9x11, part # 11378), then out to my stock “Sport Appearance Package“ tips. Also a K&N FIPK is installed.
Per request, here is a crude diagram of how the setup looks:
More info here: