Mercedes duo Lewis Hamilton and Nico Rosberg say they expect a close intra-team fight for victory at the Italian Grand Prix following Friday's practice sessions at Monza.
Hamilton edged out Rosberg by 0.021s during the second session at Monza but engine upgrades enabled the pair to finish three-quarters of a second ahead of nearest rival Sebastian Vettel.
"I didn't particularly hook up the first two sectors this afternoon they were definitely better in the morning," said Hamilton.
"So, I'm sure there's some pace to find and I'll be looking through the data tonight to find it. There's nothing major, just very small tweaks here and there which might give that bit extra.
"The car is feeling good and the team are doing a great job but it's still very intense out there. We're working as hard as we can to keep improving and the challenge is always there no matter how fast you are.
"Now we need to keep it together through the weekend. It should be close with Nico as always so I'm looking forward to."
"Today in the qualifying simulation it was very close with Lewis," said Rosberg.
"It looks like it will be a tough fight between the two of us, so I look forward very much to the weekend."