[2] Round 1 at Sydney's Eastern Creek Grand Prix Circuit saw Queenslander and reigning champion Allan Jarvis take pole position and win all three races.
Round 3 held at Winton Raceway proved a difficult weekend for drivers with Friday and Saturday being dry and race day Sunday wet.
Series regular Reece Murphy clawed his way back into contention for the title with a consistent drive to finish second for the round behind newcomer Damian Ward.
Brooke Leech withdrew after a breaking her knee in a karting accident and Perth's Brett Stewart also after competing in Townsville the week before.
Defending series champion Allan Jarvis hit back with a win by one point over Round 4 winner Reece Murphy.