1.First of all you need to get SystemUI.apk of yur actual rom
The ne im using is open root explorer and copy SystemUI.apk to your sdcard
2.Connect the phone to the computer and copy the SystemUI.apk to the extracted APKTOOL directory (download apktoolApktool.zip)
3.There is a guide on how to use apktool here :Guide apktool
5.Navigate \SystemUI\res\values and open dimens.xml (use notepad ++)
6. Find self_expand_velocity, self collapse velocity. and change the values from the defalut +2000 per each.
7.You can change other values too, they are pretty much selfexplanatory.
8.After the necessary changes save the file and recompile systemui.apk
9.After recmpiling you can push it to system using ADB or i made a .zip to flash it in recovery.(Just put SystemUI.apk in system/app and you are ok) Just whatch out for the name as it should be exactly the ssame as it was before.
10.Flash the zip wipe cache/dalvik and enjoy your new fast dropdown and pullup
DONT FORGET THANX BUTTON
EDIT: It was pointed out that in newer versions of android (dip=dp) its the same thing so don't change it.