It was only QPR's second win since August, the hosts having taken just six points from their previous nine matches in their battle for top-flight survival.
“Hopefully this is the catalyst for something,” goalkeeper Rob Green told www.qpr.co.uk.
“We said the same after Villa and although performances were there, results didn’t follow.
“Back to back wins are key. When you have three games in a week you are looking at getting a couple of wins, especially with the games we have.”
"I don’t buy into that we couldn’t afford to lose against Leicester as there are another 70 odd points to play for still in the league,” he said.
“I wouldn’t want to live by that pressure in November. It’s just a big, big win.
"The lads showed character and whilst the quality at times wasn’t there it was a gutsy performance.”
QPR are third from bottom but level on points with both Burnley (19th) and Hull City (17th).
Queens Park Rangers travel to the Liberty Stadium on Tuesday to take on Swansea City. The match kicks off at 21:45.