Dani Pedrosa progressed from eighth on day one of the Sepang test to fourth by the end of day two, returning the Spaniard to his usual position as the leading Honda rider after initially being outpaced by team-mate Andrea Dovizioso.

2010 will be Pedrosa's first season with Ohlins suspension, Honda having joined its MotoGP rivals in using the Swedish equipment on all its machines, and adapting to the new equipment will be one of his biggest challenges this winter.

"We've been mainly focusing on the suspension side, trying to understand the Ohlins. Of course I've been riding Showa for a long time!" confirmed Pedrosa. "I was really surprised how big the difference is. If I had to summarise it I would say Showa is much more comfortable and Ohlins is not that comfortable, but maybe has extra grip."

As well as the new suspension, Pedrosa worked on chassis and electronic changes, plus a lowering of the engine position - one of the main areas in which Honda is trying to improve is braking stability.

"We got through a lot more testing today and I can say that we improved significantly - and that's important in terms of finding a good direction to follow," said Dani after day two.

"We were working mainly on the rear suspension and we've managed to collect a lot of data that should help us for the next test here in two weeks' time. We were also testing swingarms and at the end of the day I could feel the improvements, and so I'm happy about that."

Pedrosa left the test 0.897sec behind fastest man Valentino Rossi but, having been forced to start the last two seasons injured, admitted he was playing it a little safe during preparations for the 2010 season.

The #26 fractured his hand during a pre-season testing accident at Sepang in 2008, then required further surgery after sustaining knee and forearm injuries while preparing for the start of the 2009 season, at Qatar.

Despite the setbacks, Pedrosa has been Honda's highest rider every year since 2007, taking two wins in each season, and was third in last year's championship.

Dovizioso was sixth fastest on day two.