Build.prop Tweaking,a lil Guide

This Guide is for explaining and guiding to tweak the build.prop a lil bit(root needed),only with RootExplorer.
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How to:
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1, Open "Root Explorer" and click the R/W
2, Go to /system/build.prop.
3,backup yout current build.prop.
4, Long-presson Build.Prop and you’ll see a pop up.
5, Text Editor.
6, Type in those few line of words below into the last line of the text then save.
7,reboot and enjoy
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Data Tweaks Increase download/upload/3G speeds
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ro.ril.hsxpa=1
ro.ril.gprsclass=10
ro.ril.hep=1
ro.ril.enable.dtm=0
ro.ril.hsdpa.category=8 (or 10,12,14) Still looking for more of these though.
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=6
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POWER SAVES
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Allows the phone to sleep better
ro.ril.disable.power.collapse=1

Saves power when phone is sleep
pm.sleep_mode=1

Allows your wifi to scan less, saving more battery
wifi.supplicant_scan_interval=150 or 180 (your choice)

Helps Scrolling Responsiveness
windowsmgr.max_events_per_sec=150

Increase overal touch responsivenss
Debug.performance.tuning=1
Video.accelerate.hw=1
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SYSTEM TWEAKS
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Forces your home launcher into memory
ro.HOME_APP_ADJ=1

Change the Dalvik VM heap size
dalvik.vm.heapsize=64m can use 24, 32 is default, 48, 64

To disable usb debugging popup
persist.adb.notify=0

Fix some application issues
ro.kernel.android.checkjni=0

Render UI with GPU
debug.sf.hw=1

These lines forces GPU&CPU to render graphics
debug.composition.type=gpu
debug.composition.type=cpu
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                                                              more is coming