it is impossible to have a ps2 emu for the xbox just plainly cuz it wouldn't be able to run. Iv'e learned that usually for an emulator to work with no lag, ur system must be atleast twice as good as the system of the emu, ull get major lag and it will crash even if it was a time and a half better. Although the xbox is more powerful than the ps2 there is no way it could possibly run on it without crashing