Jack Miller took two seconds off his best lap time on the second day of his MotoGP test with LCR Honda around the Sepang circuit in Malaysia.

The Australian, who steps up to MotoGP on the CWM LCR Honda RC213V-RS after finishing runner-up in the Moto3 series, is spending three days in Sepang to get better acquainted with the substantially quicker machine ahead of the winter testing break.

Indeed, though Miller was happy with his progress on the first day of the test, he says the second day has seen him acquire greater confidence on the bike, culminating in him lapping almost a full two seconds faster.

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His best time was a 2min 03.1secs, which as a reference point would have placed him around 18th on the grid for October's Malaysian Grand Prix. As a comparison, Nicky Hayden's lap time on the previous generation Honda production racer was 2m 02.3secs.

"I'm particularly happy with the progress we have made on the bike, I certainly seem to have found a bit of the confidence we have been lacking," he said. "We were quicker on every single exit from the pits so that makes us all happier. We got to try another tyre on the rear, and this also worked quite well.

"Tomorrow we will aim to make a couple of longer runs to see how my physical condition is over several laps, and hopefully the weather will hold out a bit longer then."

As well as Miller's first time in MotoGP, it is also the first time LCR has run Honda's production racer in any guise having focused on just the one full prototype Honda in recent years. Miller will be team-mate to Cal Crutchlow on the full RC213V Honda.