After a bit reading, trying and reinstalling.. i've managed to get video natively working (without GE=yes), ehternet working only with legacy youkon 2, audio working with voodoohda 2.7.2...
I've edited my DSDT and created an SSDT, i've achieved to get speed step and sleep working.
I've only some minor problems:
My Apple keyboard can't wake my system, i can wake it up only with mouse or power button.
Restart isn't working after sleep.