Broc Feeney has taken out both races in Darwin, spearheading a one-two finish for Triple Eight in the final race in the Top End.
Backing up his victory in the opening event, Feeney sealed his weekend haul by converting his third pole position of the year at Hidden Valley Raceway on Sunday.
The 21-year-old pulled off a perfect drive to hold the lead across the entirety of the 48-lap, 138-km race for his fifth win so far.
Feeney had begun the season with three race wins and six podium finishes, before his grip on the series crown began to loosen after poor results in New Zealand and Perth.
He now trails teammate and series leader Will Brown (1348 points) by 92 points in the standings.
"The last couple of rounds haven't been terrible, but when you're conceding points it's not always great," Feeney said.
"It was just a couple of little things just to get back on top of it, just having the confidence in the car, feeling one with the car again.
"I felt like in both shootouts and races, you nearly feel connected with it. You know what it's going to do.
"I feel like when I have that under me, we can be on for a good result."
Brown got the jump on front-rower Brodie Kostecki from the start, blitzing his former Erebus Motorsport teammate by a massive 17-second gap to place second.
The third-place finish is reigning champion Kostecki's best result since returning to the series in round three after a highly publicised off-season contract dispute with Erebus.
Kostecki did not start the first race in Darwin after his car failed due to an engine misfire.
"There's been a few dramas here and there, some are the team's fault, some are not," he said.
"This weekend, it was nothing to do with the team."
Kostecki refused to comment when asked for details about his dispute.
PremiAir Nulon Racing's James Golding was fourth, followed by Matt Stone Racing driver Nick Percat in fifth.
The safety car came out in the opening lap when Andre Heimgartner's Brad Jones Racing Camaro lifted off the track and onto the roof of wildcard rookie Cooper Murray's car.
Both drivers were able to finish the race, with Heimgartner in 21st and Murray last of the 25-strong field.
Grove Racing driver Matt Payne finished in 19th after a fuel pressure issue threatened to prevent the New Zealander from starting the race.
He was slapped with a 15-second penalty for bumping Walkinshaw Andretti United rookie Ryan Wood off track.
RACE 12 RESULTS:
1. Broc Feeney (Triple Eight Race Engineering)
2. Will Brown (Triple Eight Race Engineering)
3. Brodie Kostecki (Erebus Motorsport)
4. James Golding (PremiAir Nulon Racing)
5. Nick Percat (Matt Stone Racing).
CHAMPIONSHIP STANDINGS:
1. Will Brown - 1348 pts
2. Broc Feeney - 1245 pts
3. Chaz Mostert - 1074 pts
4. Cam Waters - 855 pts
5. James Golding - 845 pts
