Yes dual in single out is the stock setup. One of the best setups to change too is a merge collector (y pipe) into a 3" pipe about 18 inches prior to the muffler Usually a Borla, then a single 3" pipe out to the stock location. Look up the JBA catback exhaust and look at the pictures and you will see what I am explaining. It is also a great inexpensive catback exhaust for the TItan.