Patrick Bamford's early penalty proved decisive as Leeds held on to beat Burnley 1-0 at Elland Road.
Bamford converted his 10th league goal of the season from the spot in the fifth minute and that was enough to secure his side their sixth Premier League win of the season.
Burnley, who began the day one place and four points behind Marcelo Bielsa's side, had a first-half effort from Ashley Barnes controversially ruled out and dominated the second period.
But Leeds, who spurned a host of first-half chances, refused to buckle under the onslaught and inflicted upon Burnley their first defeat in five matches.
Bamford fired his penalty into the top corner to give Leeds an early lead after he had been brought down by Burnley goalkeeper Nick Pope.
Barnes thought he had equalised for Burnley in the 17th minute, but referee Robert Jones had already blown for a foul on Leeds goalkeeper Illan Meslier. It appeared to be a harsh decision and left Dyche and his backroom staff furious.
"Ben Mee clearly has eyes for the ball, not tried to look at their keeper – their keeper comes through, knees him in the back, if a centre half does that he probably gets booked," said Dyche. "Not only is it a penalty, we put it in the goal and he doesn't give it one second to operate.
"Ironically, it's been taking hours to make a decision and you get a really important decision and they can't look at it. The referee played a big part, but we still have to focus on our part."