can ally change to horde on outlands

noob question, can ally change to horde on outlands . thanks and how if so?

Nope, at the moment.
Here you can read the reaoson: http://forum.warmane.com/showthread.php?t=355703
"Outland: Faction change is enabled only from Horde to Alliance, in order to keep a healthy horde-alliance ratio."

thankkssss