Quote:
Originally Posted by IOMike
Well I guess STP is essentially the same correction as STD.
Why would you post the STP/STD numbers and not SAE? Even GM uses SAE.
Seems like its only a way to post a higher number.
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There are a multitude of Correction factors across the globe.
A correction factor only exists to give a standard day for your Region, so when you test in the winter or test in the summer you get the same numbers.
Superflow has been the go to Dyno testing equipment for all forms or racing for over 30 years and has established STP as correct for the US North America.
We Measure Actual numbers with a Torque sensing strain gauge then correct for the Day.
Our actual number and corrected number are within 1% on the day I ran the test, I don't consider 1% an inflated number.
If anything SAE is overly conservative showing Low numbers compared to Actual measured HP and TQ.
STP is backed up by Track results time and time again, I have collected data from this dyno and backed them up at the track for over 13 years now.
STP numbers are as REAL world as it gets.
Many Dynojets read 10% too high regardless of what correction factor they apply.
This is why you see so many high dyno numbers with Low MPH at the track.
I am also collecting Air flow data that also backs up our Dyno numbers, 1 lb of air per minute produces 10 crank HP.
This car is flowing 46.65 lbs of air per minute, X 10 = 466.5 crank hp.
It is also pulling a vacuum above 4000 rpm so a CAI Cold air kit is going to add some power for sure.
Anything else I can answer for you feel free.
Thank you for asking many people want to know.
Ted.