There have been no issues with the weather in Queensland today, leaving DJR Team Penske to work through its extensive testing program.
The team is using the chassis Scott Pye raced in Tasmania, still in Wurth colours, as it looks to align its FG X Falcon closer with Prodrive Racing Australia's race winning V8 Supercar.
While there is the possibility Marcos Ambrose could get behind the wheel, the main purpose of the day is to have Pye in the driver's seat and dictate the changes he feels the Ford requires.
Earlier this week, DJR Team Penske Managing Director Ryan Story told v8supercars.com.au the decision to test today is not one the team took lightly - but the priority was to improve the car as soon as possible.
The team had originally intended to test on Monday, with PRA's engineer Adam De Borre spending the day with the team, but due to bad weather the outing had to be postponed.
De Borre - who engineers Chaz Mostert, and ran the young gun at DJR in 2013 - is on-site with DJR Team Penske today.
Erebus Motorsport is also on-track with Ash Walsh utilising a rookie day.
Walsh's Pirtek Enduro Cup co-driver Jack LeBrocq was announced this morning, and the young gun is at the track with the team today, taking in as much as he can, though he won't be behind the wheel.
Erebus' star driver Will Davison is allowed 10 laps, and he will jump in the car later this afternoon to ensure changes are in the right direction.
Walsh's #4 E63 has been upgraded for the test, running the same machinery as Davison trialled at the Australian Grand Prix and Tasmania.
Stay tuned to v8supercars.com.au for testing updates today.