What??
I'm serious when I say that. No need to change your rank, if you set it too high you're going to get shit on, and if you want to bully killers because all you do is get shit on, you can DC and you'll downrank. Just make sure to wait an hour or so in between every 5-10 DC's so you don't get banned.
If you want to change your rank for other reasons, SAM doesn't work anymore because Ranks are server-sided, and I think you can edit the HTTP requests to make the game give you points to increase/decrease your rank. I wouldn't know how to do that though. Espcially with Dedicated Servers enabled. You might want to start with Downgrading, since that is the only way to edit HTTP requests