Did you try to use NullCPUPowerManagement kext? It might be an issue with your SSDTs. Go through this link which details how to install ML for the first time: http://www.insanelym...-for-beginners/
You might also want to try and limit the cpu to 1 in the chameleon plist.
Could you pls provide more details about patching vanila AppleHDA for alc665 (l702x).
Did you try my patched AppleHDA for ALC665 from the downloads section for 10.8.3. The details are there for you to edit the DSDT for ALC665 and layout. Here is the link: http://www.insanelym...hda-for-alc665/
You can look at the included layout88.xml and Platforms.xml if you want to understand those in detail. Also you can hex diff using tool like Hex Fiend my AppleHDA binary with a vanilla AppleHDA binary and find the differences which is much easier.
Or you can manually patch which works with 10.8.0 through 10.8.3:
Open AppleHDA.kext / Contents / MacOS / AppleHDA in Hex Fiend
ctrl + f to Find Hex, 6202EC10, there should be a total of two occurrences, replace them with 6506EC10.
Also you will need to zero out some hex code so don't get assertions.
Find 0000 in my AppleHDA or hex compare and replace them in the binary.
After that you can remove any HDA enabler kexts.