Silva was speaking after victory over Bournemouth.
He said, "It's almost the same squad with some improvements, like Riyad (Mahrez), and more time together.
“So, yeah, we might be a bit better. We want to break the records of last season, but it's not easy.
“Each one of us knows the other better so it's easy.
“This squad has the quality to change a few players and still not notice much difference.
“For me coming back from injury it was a little bit different because I was two weeks without a game. But we have a lot of quality players.
“It's a little bit of pressure for our rivals – they have to win to stay close to us but it's only the start of December so too early to talk about pressure.
“Its good to go to sleep with a five-point gap."