Dyno # Uncorrected vs SAE
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Launching!
Joined: Sep 2004
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Dyno # Uncorrected vs SAE Dyno # Uncorrected vs SAE
I know I should know this, but....
What is the difference between SAE & Uncorrected numbers on a Dyno?? What do both numbers mean? What if any is the difference with STD vs. the previous figures?
Thanks!
I know I should know this, but....
What is the difference between SAE & Uncorrected numbers on a Dyno?? What do both numbers mean? What if any is the difference with STD vs. the previous figures?
Thanks!
11 Second Club
Joined: Jun 2005
Posts: 1,537
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From: Was New Orleans, but swam to Baton Rouge
Uncorrected is the actual numbers the car made that day at the dyno at that moment in time with all the current weather conditions.
SAE takes the uncorrected numbers and applies a set standards for weather conditions and adjust the number for those weather conditions. So in hot days the SAE correction will often be higher than the uncorrected numbers, and the opposite will happen on very cold days.
Some key things to remember about the weather. Altitude hurts due to a smaller concentration of oxygen. Engine like cooler temps because the air is more dense and contains more oxygen. Humidity hurts because the water vapor takes up space oxygen could be in. Finally, the higher the pressure the more oxgyen given in the air and thus increased performance, just look at forced induction to figure this one out.
SAE takes the uncorrected numbers and applies a set standards for weather conditions and adjust the number for those weather conditions. So in hot days the SAE correction will often be higher than the uncorrected numbers, and the opposite will happen on very cold days.
Some key things to remember about the weather. Altitude hurts due to a smaller concentration of oxygen. Engine like cooler temps because the air is more dense and contains more oxygen. Humidity hurts because the water vapor takes up space oxygen could be in. Finally, the higher the pressure the more oxgyen given in the air and thus increased performance, just look at forced induction to figure this one out.
