hello i found this on nexus 5 forum so i tried to flash on my GE 4.4.2 and it works very good
http://xdaforums.com/showpost.php?p=50753106&postcount=879
download from there and flash in recovery, it will not work on aosp 4.4.2 because of recent commits about building dalvik cache using all processors, if they revert the commit,or if you use an old aosp rom 4.4.2 it will work but you need to modify build.prop like i explained in this thread
http://xdaforums.com/showthread.php?t=2625186
http://xdaforums.com/showpost.php?p=50753106&postcount=879
download from there and flash in recovery, it will not work on aosp 4.4.2 because of recent commits about building dalvik cache using all processors, if they revert the commit,or if you use an old aosp rom 4.4.2 it will work but you need to modify build.prop like i explained in this thread
http://xdaforums.com/showthread.php?t=2625186