Factory Ducati team-mates Nicky Hayden and Andrea Dovizioso took advantage of a full eight hours of dry track time at Sepang on Wednesday.
American Hayden matched his racing number with an impressive 69 laps of the Malaysian Grand Prix venue, the equivalent of over three race distances, besting his time from yesterday by approximately 1.5s in the process.
However he was still 1.496 seconds from the day's top rider, Jorge Lorenzo (Yamaha).
“The good weather helped us to do a full day, and although it wasn't easy, we did a good step. We tried some things with the fork that really helped smooth out the bumps, and I had improved feeling and much better consistency.
“Our gap to the front is still big, but we'll keep pushing and working and trying to reduce that as much as possible. Tomorrow we'll keep going in the same direction we went today.”
Dovizioso, outpaced by his team-mate to the tune of just 0.025s in the final minutes, finished the day in ninth place, having completed 49 laps and improved on yesterday's time by nearly a second.
“It was a good day because we did our best work so far, in terms of both the quantity of work and the information we obtained. We really tried a lot of things with the setup, making big changes in order to understand the situation,” sad Dovi.
“Some of the adjustments improved the feeling, so they enabled me to brake a bit harder. Although the times were nothing special, in my opinion they're not so bad, even with used tyres.
“We must continue working as we try to identify what we can do to improve some aspects, but we're making progress.”
Test rider Michele Pirro claimed the 13th best time, as he continued set-up work with the 'laboratory' Desmosedici GP13.