There is no actual CM based kernel.
Maybe someday this one will be usable, but not at the moment http://xdaforums.com/xperia-z1/development/kernel-fxtrinityultimatekernel-fast-t2801620
The only other one, Pimped Kernel, is abandoned for months now. Even if somebody would actualize it, I would not use it any more. I would tend to follow a regularly cared developement.
Maybe someday this one will be usable, but not at the moment http://xdaforums.com/xperia-z1/development/kernel-fxtrinityultimatekernel-fast-t2801620
The only other one, Pimped Kernel, is abandoned for months now. Even if somebody would actualize it, I would not use it any more. I would tend to follow a regularly cared developement.