Mod the return of hunger (S.T.A.L.K.E.R.: Clear Sky)

Hi all, PLEASE give the mod to the return of hunger in clear sky.
Only without any additional modifications , just want to drive in the original hunger and all.
I scoured pleygraund and found nothing , only in the multi assemblies.
I even the user is not found how to return it , I don't know , though, trivia edit gamedata.
Since the first Stalker stirred up all sorts of fun to type in the PW - 9 to the ammo stuff, I dabbled, you know how to mess around in the files but HUNGER can not do anything, not working and all, are portrayed in actor the settings are CORRECT and they don't work , like hunger does not exist.
Rummage it seems the scripts are cut , but return the same as in the modifications , but the STUFFING of SOME kind is not for me.

HELP PLEASE , OR AT LEAST TEACH OR EXPLAIN HOW TO RETURN IT.