Front Muffler

Separate the rear HO2S connector (A) by pulling it in the direction of the arrow from the bracket.

Courtesy of KIA MOTORS AMERICA, INC.
Remove the front sub frame under cover (A) after removing the nuts.
Tightening torque:

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.

Remove the front muffler.

Separate the rubber hanger (A).

Courtesy of KIA MOTORS AMERICA, INC.

Remove the front muffler (A) after removing the nuts.

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.

Remove the rear Heated Oxygen Sensor (HO2S)
(Refer to Engine Control/Fuel System - " HEATED OXYGEN SENSOR (HO2S) REMOVAL & INSTALLATION ")