"I don't think it is the tyre that has made the difference," he told The Herald. "We have got some smart people at Shell V-Power Racing and we have a leader that is prepared to make some decisions.
"The driving group of me and Scotty [McLaughlin] are getting along well and working well together but the engineering group is working just as well.
"I think it is a lot of little things that have made the difference this year for us."
Meanwhile the Prodrive Racing Ford outfit is encouraged with Mostert's win at Ipswich.
"I am very excited to go back to SMP. I didn't realise the stats around our previous success but the car has been pretty lit there in the past," Mostert said. "I am excited to be coming off the win at Queensland Raceway.
"If we can come away with a podium and some champagne it will be another cracking weekend."
Predictions
Man to beat: It is the same every round at the moment - Scott McLaughlin
Dark horse: Chaz Mostert has recent form and historic form at this venue
Pressure on: The championship chasers - Jamie Whincup, Fabian Coulthard and Shane van Gisbergen can't lose more ground going into the endurance rounds
Keep an eye on: Kiwi Richie Stanaway will push his case for a main game drive next year by racing in the development series