i had problems, too
my solution with chimera: UseKernelCache=no GraphicsEnabler=No Darkwake=0
(with KernelCache my system was often only bootable with -f -x)
Don't use npci=0x3000, else the Audio will not work. you can use npci=0x2000 if needed
i'm using Bios Version F7...
same at multibeast.
you can install it with kextbeast
try smbios.plist with imac 13.2 (with chameleon wizard) or macbookair 6.2 (http://pikeralpha.wordpress.com/2013/06/14/new-macpro-modelboard-ids/)
i changed to test my smbios.plist to macpro 5.1 and was not able to boot (was hanging at pci configuration begins). with the other 2 solutions its...