Build.prop tweaks for galaxy y

HOW TO :

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

Here are the tweaks

debug.sf.hw = 1
Render UI with GPU (relieves
pressure on CPU)

dalvik.vm.heapsize = 32m
Set size of Dalvik VM heap (how
much RAM each instance of the VM
is allowed); depending on how
much RAM that is available to a
device, this can be increased.

persist.adb.notify = 0
Stop debugging icon from
appearing in status bar

windowsmgr.max_events_per_sec
=
120
Increase to improve scrolling
response

persist.sys.use_dithering = 0
Do not use surface dithering
(surface dithering improves image
quality)

debug.sf.nobootanimation = 1
Disable boot animation
(for fast bootup)

ro.HOME_APP_ADJ = 1
force home launcher into memory

ro.sf.lcd_density = 140
Set screen density; change
according to your device or what
suits you, a lower value will display
more but may be too small to use
on a device with a smaller screen.
Also note that changing the pixel
density will make some applications
in the new market ‘incompatible
with your device’.

mot.proximity.delay = 150
Lower to fix black screen after calls
issue

ro.telephony.call_ring.delay = 0
Decrease dialling out delay

ro.gsm.2nd_data_retry_config =
max/_retries=3, 2000, 2000, 2000
Change MMS APN retry timer from
5s to 2s

wifi.supplicant_scan_interval = 120
ro.ril.disable.power.collapse = 0
pm.sleep_mode = 1
Increase battery saving potential

ro.com.android.dataroaming=true
Enables data-roaming by default in
the build

ro.com.android.dateformat=dd-
MM-yyyy
Changes default date format to
day-month-year

ro.config.alarm_alert=*.ogg
ro.config.ringtone=*.ogg
ro.config.notification_sound=*.ogg
Changes the default sounds for
each item. Must correlate to ogg
files available in /system/media/
audio/

ro.build.display.id=NAMEOFROM
In Settings>About Phone, it lists
the name of the build number. This is where you set it.

ro.product.locale.language=en
ro.product.locale.region=GB
Sets the default region and
language. You must have the
correct letter combo, and the
language must be available for this
to work.

Guys you can try any of these without any tension this tricks do not damage your device

If you want all the above tweaks you can flash this zip file

Instructions:
1) Go to recovery mode
2)flash cwm
3)Go to mount/storage and mount system
4) go to apply update form sd then choose zip from sd and find
Buildworking.zip and flash it
5)That's it reboot the device
6)Enjoy!!!!!

*please post some feedback in the comments for the rest to see*

Guys this is where i found it xda