Jenson Button says he's confident that he and McLaren can maintain their forward trend in momentum this weekend at the Singapore Grand Prix after a 'positive' showing in Belgium and Italy.

McLaren's form has picked up of late following a mid-season slump, which has seen the former multiple world-champion constructors' slip down to fifth in the team standings despite starting the year with a strong double-podium in Melbourne.

With a sixth and eighth for the 2009 world champion in Spa and Monza, Button believes, as the team continues to develop the MP4-29, his car should still be able to lead him to more points on the high downforce configuration circuits, which begins with this weekend's Marina Bay Street course.

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"This is such a special race," says Button. "The whole weekend feels different - there's a buzz to the paddock when you first walk in on Thursday afternoon and it never goes away. You can feel the vibe - and the tension and anticipation climb higher and higher as we get closer to the race itself on Sunday night.

"We had a positive showing at Spa and Monza, and we're continuing to develop and improve the car. As we move back to higher-downforce circuits, it'll be interesting to see how the pack reshuffles itself - I think we'll still be able to maintain our forward momentum."

Finally, Button believes that this seasons new ground changing regulations have provided the championship with 'the right formula' in terms of on-track battles.

The McLaren himself was embroiled in a highly entertaining battle with his team mate from last season Sergio Perez, as the pair fought side-by-side for much of the afternoon at Monza.

"I also think Monza showed us that this formula is working - we had some fantastically close battles in Italy, and I really hope that we continue that in Singapore," Button continued.

"It's not the easiest of tracks for racing, but I think Monza has shown that the new regulations are in fact making the racing better. I'm really looking forward to getting out on track and seeing what these cars can do."