Canadian Jacques Villeneuve moved up a gear on his second and final day of testing for Renault on Thursday while Italian Jarno Trulli tried out a Toyota after joining the Japanese team.
"Today was another step forward as I continued learning about the car," declared former &to=http:// english.pravda.ru/main/18/90/361/13724_cpchild.html' target=_blank>champion Villeneuve, who was third fastest at Silverstone.
The 1997 champion is expected to return to racing, after a year out, at next week's Chinese Grand Prix.
"This morning was quite difficult as I was still moving about in my seat, and therefore could not feel the car's handling as well as I needed to, but we solved the &to=http:// english.pravda.ru/main/2002/10/10/38020.html' target=_blank>problem," added the Canadian, Reuters informed.
"On Wednesday, it was a little difficult in testing'," said Villeneuve who has already been confirmed as a Sauber driver for the 2005 and 2006 seasons.
He lost his drive at BAR-&to=http:// english.pravda.ru/comp/2002/07/25/33210.html' target=_blank>Honda towards the end of last year.
"I had a bad position in the car and I was breaking a little late. Today there were a lot of adjustments. The team was great and in the afternoon I was able to attack.
"I have spent a stress-free year, no political pressures and I feel like a new man."
The 33-year-old Villeneuve clocked 1min 17.434sec on Thursday, the third best time of the official session, says Channel News Asia.