![\"Tasmania](\"https:\/\/www.newsbeep.com\/nz\/wp-content\/uploads\/2026\/04\/Supercars-ParityTest-QR-Day1-003.jpg\")
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tChaz Mostert’s Toyota during a pre-season engine test.<\/p>\n
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tChaz Mostert’s Toyota during a pre-season engine test.<\/p>\n
The category undertook a study into the influence of inlet air temperature on the performance of the Ford and GM engines 12 months ago.<\/p>\n
That led to changes \u2013\u00a0in the form of engine mapping tweaks and a restrictor change on the Ford<\/a> \u2013 ahead of the Tasmania Super440.<\/p>\n Supercars\u2019 motorsport boss Tim Edwards confirmed to Speedcafe that parity process will also be undertaken with the 5.2-litre Toyota V8 ahead of the return to Tassie.<\/p>\n \u201cThat\u2019s underway and will be finalised before we go to the next round,\u201d Edwards told Speedcafe in Christchurch.<\/p>\n \u201cIt\u2019s exactly the same stuff that was done [with the Ford and GM] 12 months ago.<\/p>\n \u201cThere\u2019s been a little bit of work done on it, but given the time constraints we had at the start of the year, it wasn\u2019t finalised.\u201d<\/p>\n Edwards added that only the Toyota needs to be assessed as the others are known quantities from the work done last year.<\/p>\n Ticking the temperature parity box ahead of Symmons Plains is important due to the likelihood of cold conditions at the Launceston circuit, which will be followed by the heat of Darwin.<\/p>\n \u201cWe\u2019ve been racing in a similar temperature band that all the engines are dynoed at,\u201d said Edwards, downplaying any concern that the work wasn\u2019t done pre-season.<\/p>\n \u201cWe haven\u2019t been to really hot and we haven\u2019t been to really cold yet.\u201d<\/p>\n Mentor Murphy delivers raw reality behind Wood woe<\/a><\/p>\n Supercars has undertaken all parity work on the Toyota V8 locally, using the dyno of its Brisbane-based engine partner Craig Hasted.<\/p>\n The category took the Ford and GM engines to an AVL dyno in the United States in mid-2024 and had flagged intentions to return to a similar offshore facility with the Toyota.<\/p>\n Edwards, though, said such a plan remains \u201con hold at the moment\u201d due to ongoing work on the specification of the Toyota.<\/p>\n \u201cIt\u2019s not a priority because all parties are confident in the work we\u2019re doing,\u201d he said.<\/p>\n \u201cWhat the AVL dyno showed us is that, actually, the tools we\u2019ve got here are very good.<\/p>\n \u201cThat\u2019s not to say we\u2019re not going back to AVL, but to be fair to Walkinshaw, the other two engines had two and a half years of development and running before we actually went there.<\/p>\n \u201cWe\u2019re still very early in the program. What we don\u2019t want to do is go to AVL and then six months later, they need to change X, Y, Z part because they\u2019ve had a reliability issue.<\/p>\n \u201cYou don\u2019t know what you don\u2019t know, it\u2019s still early in that program so we won\u2019t even consider doing it until we\u2019re further down the track.\u201d<\/p>\n The ominous sign for Toyota\u2019s Supercars rivals<\/a><\/p>\n Walkinshaw TWG CEO Bruce Stewart said on Friday at last weekend\u2019s Christchurch Super440 that its focus remains on reliability.<\/p>\n That proved a prophetic statement given an engine issue for Ryan Wood cost him the Jason Richards Trophy just seven laps from home.<\/p>\n![\"\"\/](\"https:\/\/speedcafe.b-cdn.net\/wp-content\/uploads\/2026\/04\/3-1.webp\")
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