I posted about this in the modding section but I feel it's better asking here, as it's more of how the original game works.
What activity in the game changes the way other gangs behave towards the player?
To better explain, I have two 100% save files I done of the game. In one save file, the Ballas will attack CJ on sight, on the other, they don't, they completely ignore him. Vagos also approach CJ when you're near them, but on the other, they totally ignore CJ like the Ballas.
There's no differences between the two save files, only the final mission I done to get the 100% (At least that's the only thing I can think of that is different). So what's causing their behaviour to change like this? And can it be 'undone'?
Kudos to anyone that can figure it out because I have no idea.