QPR now face tough clashes against Tottenham, West Ham and Manchester City.
He told talkSPORT: "For [our] confidence [the win is] unbelievable. It's a great win and one for our fans as well. They were brilliant all night long singing for the boys.
"You need to get everyone, not just the players, everyone, the staff, the fans, everyone at Loftus Road believing you can do it. That really drives you forward.
"It's important after we get a massive win like that, that we go into our home games and any games we've got coming up and take that belief that we showed tonight otherwise a massive result like that can be wasted."