[Vpmedia]

modifiy these files for gun/cannon muzzleflash:
viewtopic.php?t=8641

damage fire is (my version):
C:\Program Files\Ubisoft\IL-2 Sturmovik 1946\MODS\Weapon_Effects_3_SmokeFire_Effects\3do\Effects\Textures\DamageFire.tga

do an AAA search for "Smoke Fire Effects" to find original mod