No, they will ban your MW2!
You won't be able to start the MP (SP and CO-OP will work even you get banned).
Each time you start the MP, console will pop-up and and you will get a message ,,cheat detected''. Read more here.
Back in '10
Got a question?PM/VM me!
I read them all.
Also contact me via MSN. firstname.lastname@example.org