if you noticed I stated that it was odd because same car did the same trip and consumed±90 litres when drove140+km/hr. also race engines technologies are not fully revealed and yuo can enhance motor performance by changing the ECU, in australia they call it performance chip, and i've seen it there they swap to race and performance engines and trany and fuel consumption does reduce
enhancing a car engine performance is not only by modifying engine dimensions but also by enhancing engine electronics
check out these links
enhancing a car engine performance is not only by modifying engine dimensions but also by enhancing engine electronics
check out these links

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