Kimi Raikkonen says there is still more time to be found in his Lotus E21.
The Finn set the fastest time in second practice, narrowly ahead of Red Bull's Mark Webber.
"It’s nice to be fastest but you never know what the others are doing; we just stick to our programme and don’t take too much notice of what else is happening," said Raikkonen.
"I actually made a mistake through the final corners on my fastest lap, so there’s still more time to be found. It’s tricky to get the setup right here and the wind can make a big difference; it might work for you one way but make things more tricky the other. It wasn’t a bad start today; things aren’t exactly where we want them but we’re reasonably fast, so let’s see what we can do from here."
Romain Grosjean was seventh quickest and expressed his satisfaction at his new chassis.
"The new chassis feels good," he said.
"Today we’ve been working on getting the right correlation between chassis, setup and tyres to extract everything we want from it. It’s easy to know what you want, the difficult bit is getting the little details sorted, but we’re getting there and it’s been a positive day. We’ve seen that Kimi was fastest today so that gives us a great target for tomorrow."