EFLC Only

"X" stands for the hard drive letter which you installed gta on
If you only have one hard drive then it would be on your hard drive called "C"

Replase the explosionFx.dat file in "X:\Program Files (x86)\Rockstar Games\EFLC\TBoGT\common\data\effects"
Replase the WeaponInfo.xml file in "X:\Program Files (x86)\Rockstar Games\EFLC\TBoGT\common\data"