Force India yet to try KERS, new wing

The VJM04 ran for the first time on Thursday, and Paul di Resta sampled it for the first time today. He says the team will not run KERS tomorrow either.

"We've not yet tried the new systems," he said. "We're just running a basic car to get mileage and get the performance out of that first to see if any problems arise.

"We definitely won't run KERS. In terms of the wing, we will decide later tonight. We need to work out our priorities - what we want to learn tomorrow. We're not going to get through everything, but we need to work out what definitely needs to be done here.

"There's a lot of people running round just trying to get KERS to work, whereas we're putting miles on the car."

Di Resta covered 64 laps today - only McLaren and Lotus did fewer - and he says he is still getting himself into a rhythm with the car.

"You've got to understand it before you can go forward and I think building your way up is the best way, rather than running too fast into changing something," he said. "That can easily lead the team in the wrong direction very early.

"I think we've got a reasonable base. It's difficult to gauge where you are and I would have liked a bit more running - we didn't quite reach everything in our programme. But at the same time I think I've done enough laps to get myself up to speed and feeling comfortable."