Harry did a nice job!
Nice and safe, 2 thumbs up!You commented on your dyno having zero correction,
Harry seems to always bring up correction factors, so I need to tell you that it is not possible to have a zero% correction factor when you use STD on 100 degree day. The correction factors are suppose to account for difference in temperature, absolute pressure and vapor pressure. The standard reference conditions are: Air temp 77 deg F (25 deg C), 29.235 Inches- Hg (990 mb) altitude-corrected barometric pressure, 0 ft ( 0 m) altitude, 0% relative humidity. Any changes from the above, higher or lower, cause the correction factor to change. Since the conditions are never constant, a correction factor is needed to try to make the testing more equal in any condition.
Temperature corrections seem to come out reasonable, altitude corrections on Turbo cars do seem to be liberal. If you tuned in 100 degree weather and the chart posted is showing STD correction, your probably getting a reasonable 5% correction in 100 degree heat from my experience.
If you want to know what the number is with a true zero correction, you would look at the UNCORRECTED number.
The Dyno software has several different correction factors, any of them can be selected during or after the pulls.
The most common correction factors are STD and SAE.
Hope that helps
 |
