Center Muffler

Remove the tunnel stay (A).

Courtesy of KIA MOTORS AMERICA, INC.
Remove the rear muffler bracket (A).
Tightening torque:

29.4 - 39.2 N.m (3.0 - 4.0 kgf.m, 21.7 - 28.9 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.
Detach the hanger from the center muffler.
Remove the center muffler (A).
Tightening torque:

39.2 - 58.8 N.m (4.0 - 6.0 kgf.m, 28.9 - 43.4 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.
Install in the reverse order of removal.
NOTE: Always use a new muffler gasket.