14% correction seems like a lot for that weather and altitude.
Tuesday it was in the mid 80's very high humidity and baro in the toilet here, 1200 ish elevation, corrected 7%
Dyno test info
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Re: Dyno test info
If you are using a Super Flow dyno. You do understand how ME% is used in correcting HP and not just weather data?Bigchief632 wrote: ↑Sat Sep 24, 2022 10:26 am 14% correction seems like a lot for that weather and altitude.
Tuesday it was in the mid 80's very high humidity and baro in the toilet here, 1200 ish elevation, corrected 7%
Stan
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Re: Dyno test info
Stan Weiss wrote: ↑Sat Sep 24, 2022 12:49 pmIf you are using a Super Flow dyno. You do understand how ME% is used in correcting HP and not just weather data?Bigchief632 wrote: ↑Sat Sep 24, 2022 10:26 am 14% correction seems like a lot for that weather and altitude.
Tuesday it was in the mid 80's very high humidity and baro in the toilet here, 1200 ish elevation, corrected 7%
Stan
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Re: Dyno test info
Correction factors will vary depending upon which standards are used for comparison.
Given cell conditions: 95F, 29.23 baro, 80% RH
Corrected to STP.......1.155 (no humidity)
Corrected to J1349....1.050
Corrected to STP.......1.165 (80% humidity)
Corrected to J1349....1.067
The difference in correction factor for pressure standards (STP v J1349) is 2.3%
The difference in correction for temperature standards (STP vs J1349) is 8.39%
Both standards assume dry air (0 RH); but if moist air is present at 50 RH
Corrected to STP.......0.58%
Corrected to J1349....1.52%
The difference in correction standard effect for moisture and altitude is very small,
but for temperature it is a major error factor.
Correctly measured inlet air temperature is critical for accurate correction calcs.
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Re: Dyno test info
Note I don't own a dyno. Do You own a dyno? If so is it a Super Flow Dyno?Bigchief632 wrote: ↑Sat Sep 24, 2022 1:04 pmStan Weiss wrote: ↑Sat Sep 24, 2022 12:49 pmIf you are using a Super Flow dyno. You do understand how ME% is used in correcting HP and not just weather data?Bigchief632 wrote: ↑Sat Sep 24, 2022 10:26 am 14% correction seems like a lot for that weather and altitude.
Tuesday it was in the mid 80's very high humidity and baro in the toilet here, 1200 ish elevation, corrected 7%
Stan
If so open a SFD file where it shows the STPCor Factor as being great than 1.07. In most cases this will be a constant for the full pull. Now divide Cor Hp by UnCor HP for max Hp and how far off is this number from the STPCor Factor. On the sheet I am looking at I calculate 1.10 and Super Flow says 1.075. The higher the STPCor Factor the more the 2 numbers will vary.
Stan
Stan Weiss/World Wide Enterprises
Offering Performance Software Since 1987
http://www.magneticlynx.com/carfor/carfor.htm
David Vizard & Stan Weiss' IOP / Flow / Induction Optimization Software
http://www.magneticlynx.com/DV
Offering Performance Software Since 1987
http://www.magneticlynx.com/carfor/carfor.htm
David Vizard & Stan Weiss' IOP / Flow / Induction Optimization Software
http://www.magneticlynx.com/DV
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Re: Dyno test info
Stan Weiss wrote: ↑Sat Sep 24, 2022 2:05 pmNote I don't own a dyno. Do You own a dyno? If so is it a Super Flow Dyno?Bigchief632 wrote: ↑Sat Sep 24, 2022 1:04 pmStan Weiss wrote: ↑Sat Sep 24, 2022 12:49 pm
If you are using a Super Flow dyno. You do understand how ME% is used in correcting HP and not just weather data?
Stan
If so open a SFD file where it shows the STPCor Factor as being great than 1.07. In most cases this will be a constant for the full pull. Now divide Cor Hp by UnCor HP for max Hp and how far off is this number from the STPCor Factor. On the sheet I am looking at I calculate 1.10 and Super Flow says 1.075. The higher the STPCor Factor the more the 2 numbers will vary.
Stan
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Re: Dyno test info
Clearly if you had any idea how the software works you would have no need to be posting these emojis.Bigchief632 wrote: ↑Sun Sep 25, 2022 7:44 pmStan Weiss wrote: ↑Sat Sep 24, 2022 2:05 pmNote I don't own a dyno. Do You own a dyno? If so is it a Super Flow Dyno?
If so open a SFD file where it shows the STPCor Factor as being great than 1.07. In most cases this will be a constant for the full pull. Now divide Cor Hp by UnCor HP for max Hp and how far off is this number from the STPCor Factor. On the sheet I am looking at I calculate 1.10 and Super Flow says 1.075. The higher the STPCor Factor the more the 2 numbers will vary.
Stan
Stan
Stan Weiss/World Wide Enterprises
Offering Performance Software Since 1987
http://www.magneticlynx.com/carfor/carfor.htm
David Vizard & Stan Weiss' IOP / Flow / Induction Optimization Software
http://www.magneticlynx.com/DV
Offering Performance Software Since 1987
http://www.magneticlynx.com/carfor/carfor.htm
David Vizard & Stan Weiss' IOP / Flow / Induction Optimization Software
http://www.magneticlynx.com/DV
Re: Dyno test info
Last Thursday we dyno tested at Centex dyno, 800 + elevation, in the 90s temp we had a 1.07 correction, Power Mark dyno. Since not one dyno operator over years on here would not enter the typical baro I tested on in Colorado (23.60) I asked Centex to enter my Colorado baro (23.60) in his dyno that was correcting @ 29.15 baro good for that area, THE RESULTS 1.32 correction factor..............................................
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