Kobayashi encouraged by Sauber updates despite poor weather at Mugello

Sauber delivered a host of developments to its car on Tuesday - including revised exhausts, new front wing and new diffuser - but only managed to complete a few laps in dry conditions over the course of the day.

However, Kobayashi says even with that limited running there was a positive feeling from the car - as the team awaits better weather.

"It was difficult to take any feeling from today, and we are looking at the data to work on it," Kobayashi told AUTOSPORT. "At the moment though we don't have any negative feelings and it is looking positive - so hopefully we can have some more dry running from tomorrow."

With other teams waiting until later in the test to unveil their latest update package, Kobayashi has backed his outfit's decision to deliver their bits early.

"We wanted to get data - and that is very important for us," he said. "We don't know what is going to happen with the weather, so we have to get all the mileage we can and check that all the systems are working well.

"We have so many things to test here, so it was better that we started doing that from today."