It is really only a quest for standardization. Like saying I can lift 100 and you can lift 100 on the bench, but I'm talking kilograms and you're talking pounds, but after you'd done 50 pushups.
The tests will never be the same so for true comparison you have to adjust them. If you don't trust the adjustment then you will have to dyno on both machines. Don't worry, they already correct for temperature.
It really isn't that big of a deal. Just quote the actual numbers you were given without corrections.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
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'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
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