Default [Q] M8 Dual Sim elementalx/x-off/xposed

Hi,

I get me new m8 dual sim 2 days ago.... I rooted it, and installed custom recovery.... but I can not install any of the following:
- Elementalx
- x-off
- xposed

I think that I need x-off to install xposed. I tried ElementalX post in XDA but it never work for me.

I hope some one have experience with that.

thanks in advanced