"What's so exciting is that there is so much more to come from myself and from this team," Button said. "I can't wait to get to Malaysia."

But Brawn might face challenging times ahead.

Brawn recently secured a partnership deal with Sir Richard Branson and the Virgin Group, but the sponsorship is for Australia and Malaysia only. The team continues to search for major sponsorship while dealing with an already underfunded operation.

"We haven't got the budget but, hopefully, we will and hopefully people will take an interest in what we have done with a pretty plain car," Button told the UK Daily Express newspaper this week. "Our factory and facilities are very good, it is just whether weve enough money to run the machines. I am hoping and guessing it is going to be OK. It would be a waste otherwise."

Furthermore, stewards last Thursday passed the cars of Brawn, along with Toyota and Williams, for the Australian GP, despite protests from rivals, who believed their diffusers may be illegal. The protests were rejected, which in turn was appealed by Ferrari, Red Bull Racing and Renault. The FIA International Court of Appeal will hear the case on April 14.

Brawn, Toyota and Williams could possibly be stripped of all points they scored in Australia and Malaysia, should their cars be deemed outside the rules.

While the Brawn BGP 001 car has performed exceptionally well so far, McLaren is still searching for answers in how to significantly improve their MP4-24. Defending world champion Lewis Hamilton had poor performances in qualifying and practices at Melbourne. Hamilton struggled for pace throughout the 58-lap event, but good strategy and a little bit of fortune (two safety cars and Jarno Trulli's time penalty) helped the Briton soldier on to a third-place finish.

"First, we shouldn't get carried away by our podium in Australia," Hamilton said. "Yes, we had a fantastic race, but we're all aware that our car isn't capable of repeating that sort of performance on sheer pace alone. And Sepang is one of the tougher tracks on the calendar, one where we will probably be further from the frontrunners than we were in Albert Park."

With little time to make changes to the car between Australia and Malaysia, Hamilton is hopeful he can turn in another strong run this weekend.

"We're all really encouraged by the progress we've made, and I know we'll be pushing as hard as ever to put more points on the board in Sepang."