[Elephone P9000 Questions & Answers] Jonny:
That mod is not really improving anything - most of his "tweaks" are build.prop modifications that are either outdated and no longer work (such as locking launcher in memory - that one hasn't worked since ICS) or actually have a detrimental effect on battery, as you've found out.

You should remove his mod.

Edit: Just to prove my point that he spams the build.prop - a section of the so called "tweaks" in his fix.sh script inside the zip:

echo "# Audio props BeatsAudio" >> /system/build.prop
echo "persist.sys.media.use-awesome=1" >> /system/build.prop
echo "sys.keep_app_1=com.zloban.beatsfx" >> /system/build.prop
echo "ro.audio.samplerate=48000" >> /system/build.prop
echo "ro.audio.pcm.samplerate=48000" >> /system/build.prop
echo "af.resampler.quality=255" >> /system/build.prop
echo "persist.af.resampler.quality=255" >> /system/build.prop
echo "af.resample=52000" >> /system/build.prop
echo "persist.audio.fluence.mode=endfire" >> /system/build.prop
echo "persist.audio.hp=true" >> /system/build.prop
echo "persist.audio.vr.enable=false" >> /system/build.prop
echo "persist.audio.handset.mic=digital" >> /system/build.prop
echo "persist.audio.lowlatency.rec=false" >> /system/build.prop
echo "dev.pm.dyn_samplingrate=1" >> /system/build.prop
echo "persist.dev.pm.dyn_samplingrate=1" >> /system/build.prop
sed -i '/deep_buffer {/,/}/s/^/#/' /system/etc/audio_policy.conf

echo "# Touchscreen Performance and scroll responsiveness" >> /system/build.prop
echo "debug.performance.tuning=1" >> /system/build.prop
echo "windowsmgr.max_events_per_sec=90" >> /system/build.prop
echo "view.touch_slop=2" >> /system/build.prop
echo "view.scroll_friction=10" >> /system/build.prop
echo "view.minimum_fling_velocity=25" >> /system/build.prop
echo "ro.max.fling_velocity=12000" >> /system/build.prop
echo "ro.min.fling_velocity=8000" >> /system/build.prop
echo "ro.min_pointer_dur=8" >> /system/build.prop
echo "touch.size.calibration=geometric" >> /system/build.prop
echo "touch.size.scale=100" >> /system/build.prop
echo "touch.pressure.calibration=amplitude" >> /system/build.prop
echo "touch.pressure.scale=0.001" >> /system/build.prop
echo "persist.service.lgospd.enable=0" >> /system/build.prop
echo "persist.service.pcsync.enable=0" >> /system/build.prop
echo "ro.ril.enable.a52=1" >> /system/build.prop
echo "ro.ril.enable.a53=0" >> /system/build.prop
echo "video.accelerate.hw=1" >> /system/build.prop

echo "# Saves some battery without reducing performances" >> /system/build.prop
echo "wifi.supplicant_scan_interval=497" >> /system/build.prop
echo "power.saving.mode=1" >> /system/build.prop
echo "ro.vold.umsdirtyratio=20" >> /system/build.prop
echo "ro.ril.disable.power.collapse=0" >> /system/build.prop
echo "profiler.force_disable_err_rpt=1" >> /system/build.prop
echo "profiler.force_disable_ulog=1" >> /system/build.prop
echo "dalvik.vm.checkjni=false" >> /system/build.prop
echo "dalvik.vm.execution-mode=int:jit" >> /system/build.prop
echo "ro.ril.power_collapse=1" >> /system/build.prop
echo "power_supply.wakeup=enable" >> /system/build.prop
echo "ro.mot.eri.losalert.delay=1000" >> /system/build.prop
echo "ro.config.hw_fast_dormancy=1" >> /system/build.prop
echo "ro.config.hw_power_saving=1" >> /system/build.prop
echo "ro.ril.fast.dormancy.rule=0" >> /system/build.prop
echo "dalvik.vm.verify-bytecode=false" >> /system/build.prop
echo "dalvik.vm.dexopt-flags=m=y,v=n,o=v,u=n" >> /system/build.prop
echo "vm.stat_interval=1" >> /system/build.prop

echo "# Increase general Performance" >> /system/build.prop
echo "debug.performance.tuning=1" >> /system/build.prop

echo "# DeepSleep Control" >> /system/build.prop
echo "ro.ril.sensor.sleep.control=1" >> /system/build.prop
echo "pm.sleep_mode=1" >> /system/build.prop

echo "# Increase camera's photo and video recording quality" >> /system/build.prop
echo "ro.media.dec.jpeg.memcap=8000000" >> /system/build.prop
echo "ro.media.enc.hprof.vid.bps=8000000" >> /system/build.prop
echo "ro.media.enc.hprof.vid.fps=65" >> /system/build.prop
echo "ro.media.enc.jpeg.quality=100,100,100" >> /system/build.prop
echo "ro.camcorder.videoModes=true" >> /system/build.prop
echo "ime_extend_row_keyboard=true" >> /system/build.prop
echo "ime_onehand_keyboard=true" >> /system/build.prop
echo "ime_split_keyboard=true" >> /system/build.prop
echo "ime_vibration_pattern=0:60" >> /system/build.prop
echo "ro.media.cam.preview.fps=0" >> /system/build.prop
echo "ro.media.capture.flash=led" >> /system/build.prop
echo "ro.media.capture.flashMinV=3300000" >> /system/build.prop
echo "ro.media.capture.torchIntensity=40" >> /system/build.prop
echo "ro.media.capture.flashIntensity=70" >> /system/build.prop
echo "ro.media.capture.maxres=8m" >> /system/build.prop
echo "ro.media.capture.fast.fps=4" >> /system/build.prop
echo "ro.media.capture.slow.fps=120" >> /system/build.prop
echo "ro.media.panorama.defres=3264x1840" >> /system/build.prop
echo "ro.media.panorama.frameres=1280x720" >> /system/build.prop
echo "ro.camcorder.videoModes=true" >> /system/build.prop

echo "# Disable Error reporting and logs" >> /system/build.prop
echo "profiler.force_disable_err_rpt=1" >> /system/build.prop
echo "profiler.force_disable_ulog=1" >> /system/build.prop
echo "logcat.live=disable" >> /system/build.prop
echo "ro.config.nocheckin=1" >> /system/build.prop

echo "# Disable the 'USB Debugging' Notification" >> /system/build.prop
echo "persist.adb.notify=0" >> /system/build.prop

echo "# Reduce the black screen time of the proximity sensor" >> /system/build.prop
echo "ro.lge.proximity.delay=15" >> /system/build.prop
echo "mot.proximity.delay=15" >> /system/build.prop

echo "# Smoother video streaming and tweak media" >> /system/build.prop
echo "media.stagefright.enable-player=true" >> /system/build.prop
echo "media.stagefright.enable-rtsp=true" >> /system/build.prop
echo "media.stagefright.enable-meta=true" >> /system/build.prop
echo "media.stagefright.enable-scan=true" >> /system/build.prop
echo "media.stagefright.enable-http=true" >> /system/build.prop
echo "media.stagefright.enable-aac=true" >> /system/build.prop
echo "media.stagefright.enable-qcp=true" >> /system/build.prop
echo "media.stagefright.enable-record=true" >> /system/build.prop

echo "# 3G signal and speed tweaks" >> /system/build.prop
echo "ro.ril.gprsclass=10" >> /system/build.prop
echo "ro.telephony.default_network=10" >> /system/build.prop
echo "persist.cust.tel.eons=1" >> /system/build.prop

echo "# Better call voice quality." >> /system/build.prop
echo "ro.ril.enable.amr.wideband=1" >> /system/build.prop

echo "# Better internet browsing & Speed" >> /system/build.prop
echo "net.tcp.buffersize.default=4096,87380,256960,4096, 16384,256960" >> /system/build.prop
echo "net.tcp.buffersize.wifi=4096,87380,256960,4096,163 84,256960" >> /system/build.prop
echo "net.tcp.buffersize.umts=4096,87380,256960,4096,163 84,256960" >> /system/build.prop
echo "net.tcp.buffersize.gprs=4096,87380,256960,4096,163 84,256960" >> /system/build.prop
echo "net.tcp.buffersize.edge=4096,87380,256960,4096,163 84,256960" >> /system/build.prop
echo "net.tcp.buffersize.hspa=6144,87380,524288,6144,163 84,262144" >> /system/build.prop
echo "net.tcp.buffersize.lte=524288,1048576,2097152,5242 88,1048576,2097152" >> /system/build.prop
echo "net.tcp.buffersize.hsdpa=6144,87380,1048576,6144,8 7380,1048576" >> /system/build.prop
echo "net.tcp.buffersize.evdo_b=6144,87380,1048576,6144, 87380,1048576" >> /system/build.prop
echo "net.ipv4.ip_no_pmtu_disc=0" >> /system/build.prop
echo "net.ipv4.route.flush=1" >> /system/build.prop
echo "net.ipv4.tcp_ecn=0" >> /system/build.prop
echo "net.ipv4.tcp_fack=1" >> /system/build.prop
echo "net.ipv4.tcp_mem=187000 187000 187000" >> /system/build.prop
echo "net.ipv4.tcp_moderate_rcvbuf=1" >> /system/build.prop
echo "net.ipv4.tcp_no_metrics_save=1" >> /system/build.prop
echo "net.ipv4.tcp_rfc1337=1" >> /system/build.prop
echo "net.ipv4.tcp_rmem=4096 39000 187000" >> /system/build.prop
echo "net.ipv4.tcp_sack=1" >> /system/build.prop
echo "net.ipv4.tcp_timestamps=1" >> /system/build.prop
echo "net.ipv4.tcp_window_scaling=1" >> /system/build.prop
echo "net.ipv4.tcp_wmem=4096 39000 18700" >> /system/build.prop
echo "net.core.wmem_max=1048576" >> /system/build.prop
echo "net.core.rmem_max=1048576" >> /system/build.prop
echo "net.core.rmem_default=262144" >> /system/build.prop
echo "net.core.wmem_default=262144" >> /system/build.prop
echo "net.core.optmem_max=20480" >> /system/build.prop
echo "net.unix.max_dgram_qlen=50" >> /system/build.prop

echo "# Increase some Performance" >> /system/build.prop
echo "ro.secure=0" >> /system/build.prop
echo "persist.sys.use_16bpp_alpha=1" >> /system/build.prop
echo "ro.product.gpu.driver=1" >> /system/build.prop

echo "# Enable/Tweak GPU Acceleration" >> /system/build.prop
echo "debug.composition.type=c2d" >> /system/build.prop
echo "debug.egl.hw=1" >> /system/build.prop
echo "debug.enabletr=true" >> /system/build.prop
echo "debug.overlayui.enable=1" >> /system/build.prop
echo "debug.qctwa.preservebuf=1" >> /system/build.prop
echo "debug.performance.tuning=1" >> /system/build.prop
echo "debug.sf.hw=1" >> /system/build.prop
echo "dev.pm.dyn_samplingrate=1" >> /system/build.prop
echo "hw3d.force=1" >> /system/build.prop
echo "ro.config.disable.hw_accel=false" >> /system/build.prop
echo "ro.fb.mode=1" >> /system/build.prop
echo "ro.sf.compbypass.enable=0" >> /system/build.prop
echo "ro.vold.umsdirtyratio=20" >> /system/build.prop
echo "persist.sys.composition.type=c2d" >> /system/build.prop
echo "persist.sys.ui.hw=1" >> /system/build.prop

echo "# Force launcher into memory" >> /system/build.prop
echo "ro.HOME_APP_ADJ=1" >> /system/build.prop

echo "#Removes Ring Delay" >> /system/build.prop
echo "ro.telephony.call_ring.delay=0" >> /system/build.prop
echo "ring.delay=0" >> /system/build.prop