[VIS #2]

Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
Disconnect the variable intake solenoid valve connector (A).
Disconnect the vacuum hoses (B) from the valve.
Remove the installation nuts (C) and then remove the valve from the surge tank.
Variable intake solenoid valve mounting nut :

7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb.ft)

Fig 1: Disconnecting Variable Intake Solenoid Valve Connector
Courtesy of KIA MOTORS AMERICA, INC.