Adam Carroll led the way for Team Ireland at the end of the opening day of practice for this weekend's A1GP race at Zhuhai in China.
Carroll, who had only been fifth fastest in the morning session, was pleased with his quickest lap of 1 min 23.279 secs that left him half a second ahead of Canada's Robert Wickens.
"Obviously it was only practice but it was a good way to start the weekend," said the 25-year-old from Portadown. "We got a pretty good lap on new rubber but I'm sure everyone's going to catch up.
"I'm hoping we can carry the pace all the way through the weekend and get up the front and stay there.
"In the past couple of races I've had some major issues with the seat and I find it quite hard to get comfortable in the car. We've had to make seven so far!
" But now I'm comfortable and I can really concentrate on driving the car rather than being in pain so it should make a lot of difference."
Germany's Michael Ammermuller, who had been quickest in the morning session, was third in the afternoon. He finished ahead of Holland's Jeroen Bleekemolen.
Ireland are currently seventh in the A1GP standings.