get my italian citizenship

Hello,
Im a brazilian who applied more then 2 years ago for my italian passaport!!! I have been searching long ago and aparently after my application it maybe a chance for me to get it, but it is taking to long… I wish to go and live in Italy for a while to see if it will become more fast the process… Is anyone knows if it is true?
The Brazilian Consultate keeps saying the process is in Rome, but who knows?
Can someone give me some tips?
gradzie
Adriana