Quote:
Originally Posted by img
Sal,
Unfortunately the graph alone doesn't tell the whole story about
SAE correction. For both runs, can you please provide the
UNCORRECTED horsepower, ambient temperature, ambient pressure, and
relative humidity. 8% correction is outside of the SAE
specification and would be invalid to begin with. I tried to look
at your graph to get the ambient conditions to run through the SAE
calculator, and came up with only 5% correction. But I had to
guess some of the numbers because the resolution of the image is
too low to see the numbers accurately. So it would be great if
you could post the uncorrected HP, along with all of the ambient
conditions for both runs to double check these results.
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Unforunately Dyno Dynamics graphs cannot be shown uncorrected.
Big flaw in my opinion in the software!
I think you however missed the point of it. This is not an analysis of this extreme example but an example to show SAE corrections don't always work. I can post loads of examples similar to this.
The car has had nothing changed. Just a different day of testing.
The whole point of SAE correction is to maintain the power no matter what the ambient conditions. Clearly this is not working.
The correction factors are 8% apart and the power difference average through the rpm range is 5% apart.
It does work on some cars!
I can give you all the detail you want and you can manually correct back.
The correction factors shown are the actual ones so you will get the same results as myself.
To calculate manually the uncorrected figures you just add 8% and 1% on the graphs.