[traveldude1]

Forget about loosing your old and coming back with a new passport. The Brazilian immigration computer system is very up-to-date now. Even with a second nationality (and another passport of that) they will find all your information and how long you had stayed in total throughout the last year. And if you were fined, you might be stopped at the border. The new laws are extremely strict now. Don't risk it, it is not worth it.