GTA5-Mods.com 에 오신 것을 환영합니다

I installed this mod today and it works great, thanks! :)
Only problem I had was that police chases became way too intense after that. I hit my own car with a sledgehammer a few times, and the dam army came after me (including tanks and everything), at just two stars. Is that supposed to happen?

I'm completely new to GTA V modding, can someone please explain to me what exactly I need to install this? Also, is there any way I can back up or revert the files after modding, so that I can go online? Thanks :)