How to make power management work?

Hello!

I tried doing that guide: https://www.tonymacx86.com/threads/quick-guide-to-generate-a-ssdt-for-cpu-power-management.177456/

First I had to change my SMBIOS to iMac12,2 for the generation tool to recognize my Intel Core i7 3820 (Sandy Bridge E), then I followed the guide and put everything where it belongs.

But the output of that kext is the following: https://pastebin.com/nVWntmjK

Is there anything I did wrong or are there any additional bootflags I have to set?

Thanks for your help!