Aussie MotoGP driver Casey Stoner's enjoying his move to Honda so far.

On the first day of testing in Sepang, Malaysia, Stoner recorded fastest time, beating the defending champion Jorge Lorenzo for Fiat Yamaha.

Stoner was thrilled saying the bike had taken a little time to get used to again but he had become comfortable very quickly.

Meanwhile his arch rival Valentino Rossi experienced a few problems aboard his new team bike, for Ducati.