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The person that showed me the site did the math using actual timeslips from some recent runs and it was very close. So if you have both dyno results and timeslips that match up with the numbers the analyzer gives you here within a small margin of error, then I would say it is a pretty cool tool. I mean, we should still run the races an all, due to driver error and other various factors, but this could give you a clue into what you are in for against various vehicles.