Understand your concern, but I don't know of anyone who would actually do a dyno pull at WOT on a cold engine. If you do, don't let them do it on your car.
By the way, does you group have a certain test procedure like those recognized by the EPA - FTP75, HWFET, US06? How are the vehicles prepared? What instruments are used to measure fuel flow? Do you use dynos or actual driving? Is there a closed loop track or course you run? From your comments concerning ABA testing there seems to be more science there than just filling the tank and looking at the odometer.
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