saltshaker Jon I have both 2. When you put ALL the correct numbers in you are within 2% of the motor. I was off on the old 452 motor by 5HP and 8ft of torque. The yesterday I dynoed the car it was 95f and the humitity was 90%. There software is setup for perfect air, baro, humitity and at sea level.
My 482 motor was on the dyno yesterday and was 8hp and 12ft more than the Dyno 2000 sheets. Street pipes and no race fuel, GO figure.
Rick L.