SAE and regular dyno numbers
TECH Enthusiast
Joined: Jul 2002
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From: Austin, TX
Originally Posted by taqwache
whats the differents?
std is what your car was making on the dyno
sae is used so we can compare numbers taking in account all those variable factors...
TECH Junkie
Joined: Jan 2002
Posts: 3,015
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From: At the office
I'm not sure what you mean by difference, but there are usually 3 different sets of dyno #'s you'll see.
Uncorrected, corrected SAE and corrected STD.
All corrected dyno #'s factor in temperature, barometric pressure, etc.., and tell you what you would dyno at a given temperature.
STD and SAE are the two different correction methods that are used, but the SAE is the correction method most widely accepted, and is what we here at LS1tech use to compare and contrast horsepower #'s. (***NOTE...every dyno is a bit different, and dyno's should in theory be used only for tuning purposes, but we all just can't help ourselves when it comes to bench racing
)
SAE stands for Society of Automotive Engineers, and STD stands for standard. STD corrrected hp #'s are a bit higher than SAE horsepower #'s due to different correction factors.
Uncorrected #'s show what power your car makes in the conditions you dyno in. I could dyno the same car when it's 100 degrees and humid outside and make 350rwhp, but when it's 30 degrees outside, dry, with a great barometer, I could dyno say 380rwhp. That being said uncorrected#'s wouldn't allow you to accurately gauged changes in your dyno#'s since not only your mods, but the weather changes would have an impact on your #'s.
Uncorrected, corrected SAE and corrected STD.
All corrected dyno #'s factor in temperature, barometric pressure, etc.., and tell you what you would dyno at a given temperature.
STD and SAE are the two different correction methods that are used, but the SAE is the correction method most widely accepted, and is what we here at LS1tech use to compare and contrast horsepower #'s. (***NOTE...every dyno is a bit different, and dyno's should in theory be used only for tuning purposes, but we all just can't help ourselves when it comes to bench racing
)SAE stands for Society of Automotive Engineers, and STD stands for standard. STD corrrected hp #'s are a bit higher than SAE horsepower #'s due to different correction factors.
Uncorrected #'s show what power your car makes in the conditions you dyno in. I could dyno the same car when it's 100 degrees and humid outside and make 350rwhp, but when it's 30 degrees outside, dry, with a great barometer, I could dyno say 380rwhp. That being said uncorrected#'s wouldn't allow you to accurately gauged changes in your dyno#'s since not only your mods, but the weather changes would have an impact on your #'s.
i am ignorant and not 100 percent sure, but I thought that SAE stood for Standard Atmosphere Enviroment.... meaning the SAE corrects the numbers to what your car would run at a standard atmosphere... ie pressure 29.92, 70 deg, certain humidity etc etc...
the weather guy
the weather guy
Originally Posted by verbs
I'm not sure what you mean by difference, but there are usually 3 different sets of dyno #'s you'll see.
Uncorrected, corrected SAE and corrected STD.
All corrected dyno #'s factor in temperature, barometric pressure, etc.., and tell you what you would dyno at a given temperature.
STD and SAE are the two different correction methods that are used, but the SAE is the correction method most widely accepted, and is what we here at LS1tech use to compare and contrast horsepower #'s. (***NOTE...every dyno is a bit different, and dyno's should in theory be used only for tuning purposes, but we all just can't help ourselves when it comes to bench racing )
SAE stands for Society of Automotive Engineers, and STD stands for standard. STD corrrected hp #'s are a bit higher than SAE horsepower #'s due to different correction factors.
Uncorrected #'s show what power your car makes in the conditions you dyno in. I could dyno the same car when it's 100 degrees and humid outside and make 350rwhp, but when it's 30 degrees outside, dry, with a great barometer, I could dyno say 380rwhp. That being said uncorrected#'s wouldn't allow you to accurately gauged changes in your dyno#'s since not only your mods, but the weather changes would have an impact on your #'s.
Uncorrected, corrected SAE and corrected STD.
All corrected dyno #'s factor in temperature, barometric pressure, etc.., and tell you what you would dyno at a given temperature.
STD and SAE are the two different correction methods that are used, but the SAE is the correction method most widely accepted, and is what we here at LS1tech use to compare and contrast horsepower #'s. (***NOTE...every dyno is a bit different, and dyno's should in theory be used only for tuning purposes, but we all just can't help ourselves when it comes to bench racing
)SAE stands for Society of Automotive Engineers, and STD stands for standard. STD corrrected hp #'s are a bit higher than SAE horsepower #'s due to different correction factors.
Uncorrected #'s show what power your car makes in the conditions you dyno in. I could dyno the same car when it's 100 degrees and humid outside and make 350rwhp, but when it's 30 degrees outside, dry, with a great barometer, I could dyno say 380rwhp. That being said uncorrected#'s wouldn't allow you to accurately gauged changes in your dyno#'s since not only your mods, but the weather changes would have an impact on your #'s.
TECH Junkie
Joined: Jan 2002
Posts: 3,015
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From: At the office
Originally Posted by Cokeroker
but I thought that SAE stood for Standard Atmosphere Enviroment.... meaning the SAE corrects the numbers to what your car would run at a standard atmosphere... ie pressure 29.92, 70 deg, certain humidity etc etc...
the weather guy
the weather guy
SAE Standard J1349, applies the following weather station data- atmospheric pressure 29.23, air temperature 77 degrees Fahrenheit and humidity 0 percent to all tests.
right on.... 29.23 is pretty low of an altimeter setting... not actually ever that low unless under hurricane conditions..... is this number 29.23 correct? 29.92 is known as standard atmosphere... not trying to argue at all... am just curious
