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VE Calculator - 2 different results - which is correct?

  • Smeter12
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5 years 1 month ago - 5 years 1 month ago #41799 by Smeter12
VE Calculator - 2 different results - which is correct? was created by Smeter12
Here are my VE data PID inputs:

IAT temp - 91 deg F
Engine RPM - 4789
MAF (g/s) - 103
Engine Displacement - 3.0L
Baro - 28 in hg

The OTC website ( www.otctools.com/ve ) puts me at 74% VE while ATG training's website ( atgtraining.com/atg-volumetric-efficiency-calculator/ ) puts me at 79.68%. 74% is a failure while 79.69% is a pass - huh?

As always, thoughts appreciated.
Last edit: 5 years 1 month ago by Smeter12. Reason: thought I could ad a Shopstream file - I could not

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  • Tyler
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5 years 1 month ago #41803 by Tyler
Replied by Tyler on topic VE Calculator - 2 different results - which is correct?
Short answer: The OTC calculator is wack. :lol: ATG calculator FTW.

Long answer: The difference is that the ATG calculator takes the barometric pressure into account. OTC doesn't. Sometimes it doesn't matter! Sometimes it's the difference between a fail and a pass.

I went through the same struggles with the OTC calculator a few years ago:

www.scannerdanner.com/forum/diagnostic-t...s-absolute-load.html

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