Quote from Capp777 on February 24, 2014
My list to date.
See MJ’s postings for his suggested names
for the OBS 7.3L. (Link below).
MAP psia OBS
MAP psia
Header: C410F1
Mode/Pid: 221452
Equation: (((A*256)+B)*0.00109)16.03
Units: psia
MAP freq OBS
MAP freq
Header: C410F1
Mode/Pid: 221452
Equation: ((A*256)+B)*0.00390625
Units: Hz
Boost OBS
Boost OBS
Header: C410F1
Mode/Pid: 221452
Equation: ((((A*256)+B)*0.00109)16.03)Baro()
Units: psi
Boost OBS (Alternate)
Boost Alt
Header: C410F1
Mode/Pid: 221452
Equation: ((((A*256)+B)*0.00109)16.03)Val{Baro42 psia}
Units: psi
MAP kPa OBS
MAP kPa
Header: C410F1
Mode/Pid: 221452
Equation: (((A*256)+B)*0.00752)110.45
Units: kPa
IAT V
IAT V
Header: C410F1
Mode/Pid: 22114A
Equation: ((A*256)+B)/13168
Units: Volts
IAT F OBS
IAT F
Header: C410F1
Mode/Pid: 22114A
Equation: (((A*256)+B)*0.00314)+193.34
Units: °F
IAT C OBS
IAT C
Header: C410F1
Mode/Pid: 22114A
Equation: (((A*256)+B)*0.00174)+89.65
Units: °C
IAT C Poly OBS *
IAT C Poly
Header: C410F1
Mode/Pid: 22114A
Equation:
(0.00000000000196*(((A*256)+B)*((A*256)+B)*((A*256)+B)))
+(0.000000196*(((A*256)+B)*((A*256)+B)))+(0.00774*((A*256)+B))+144.0
Units: °C
Equation (Alternate):
(1.96*(10^12)*(((A*256)+B)^3))+(1.96*(10^7)*(((A*256)+B)^2))+(0.00774*((A*256)+B))+144.0
Units: °C
TFT V
TFT V
Header: C410F1
Mode/Pid: 2211BD
Equation: ((A*256)+B)/13168
Units: Volts
TFT F OBS
TFT F
Header: C410F1
Mode/Pid: 2211BD
Equation: (((A*256)+B)*0.00360)+212.98
Units: °F
TFT F Poly OBS *
TFT F Poly
Header: C410F1
Mode/Pid: 2211BD
Equation:
(0.00000000000194*(((A*256)+B)*((A*256)+B)*((A*256)+B)))
+(0.0000002*(((A*256)+B)*((A*256)+B)))+(0.0096*((A*256)+B))+259.5
Units: °F
Equation (Alternate):
(1.94*(10^12)*(((A*256)+B)^3))+(2*(10^7)*(((A*256)+B)^2))+(0.0096*((A*256)+B))+259.5
Units: °F
TFT C OBS
TFT C
Header: C410F1
Mode/Pid: 2211BD
Equation: (((A*256)+B)*0.00189)+95.35
Units: °C
Baro27 freq
Baro freq
Header: C410F1
Mode/Pid: 221127
Equation: A
Units: Hz
Baro42 psia
Baro psia
Header: C410F1
Mode/Pid: 221442
Equation: ((A*256)+B)/27.67985874
Units: psia
Baro42 kPa
Baro kPa
Header: C410F1
Mode/Pid: 221442
Equation: ((A*256)+B)/4.01463133
Units: kPa
Baro42 inH2O
Baro inH2O
Header: C410F1
Mode/Pid: 221442
Equation: (A*256)+B
Units: inH2O
MJ’s post for suggested names…
http://powerstrokenation.com/forums/showthread.php?t=299202&page=3
* Updated polynomials due to parser changes.
Friendly reminder:
The polynomial equations are preferred due to the
linear equations not being accurate at either end of
the voltage “S” curve.
For example, the TFT linear equation given will top out at
213°F and will not accurately show an overheat condition
beyond the point in the “S” where the end turns.
Other sites continue to make the mistake of propagating
the linear equation.
