Pid Creation / Calculated pids

[Gelf VXR]

I have searched looking for infor for creating custom pids, calculated from existing pids, but Is there any way to create a new Pid that looks up a calibration table as seen in the tune tool {B5101}?

I would like to create a calculated pid that looks at commanded spark and compares to delivered spark

{B5101}/{SAE.SPARKADV}

Any help much appreciated?

[jfpilla]

Don't know what B5101 looks like. Anything like B5913?

[Gelf VXR]

Almost the same, Spark data for SAE.RPM vs GM.APCYL_E40_DMA

[jfpilla]

Gelf,
Does this help you create a pid?
Joe

[jfpilla]

I would like to create a calculated pid that looks at commanded spark and compares to delivered spark

I should have read carefully. I missed that. What you want to do won't be too helpfull because of the different tables being used at any time and timing adjustments made by the programming. It will all be recorded on the table I posted.

[Gelf VXR]

Gelf,
Does this help you create a pid?
Joe

Sorry buy no, below is an example of the LC1/2 BEN's calculated pid, I have not seen any pids that reference tune tool calibrations directly thou?

# ================================================== ============================
# Calculated
# ----------------
#
# Calculated parameters are derived from existing parameters by evaluating
# the supplied expression.
#
# Only numeric expressions are supported.
# Parameter names must be enclosed in curly braces {} and if a particular unit
# of measure is required then that unit's CODE must be appended in the
# parameter name seperated by a dot.
# i.e. to specify the MAF rate in grams per second use: {SAE.MAF.gps}
# to specify the MAF rate in pounds per minute use: {SAE.MAF.lbpm}
# If units of measure are not required then append neither a dot nor any units
#
#Units Low High Fmt Expression
#------------ ------------- ------------- ---- --------------------------------------------------------------
# Innovate LC-1 WBO2
# ========================
*CLC-00-932
V 0.0 5.0 .1 "{EXT.AD1}"
AFR 10.0 20.0 .2 "(({EXT.AD1}+0.03)*3)+7.35"
*CLC-00-933
factor 0.0 2.0 .1 "{CALC.AFR_LC11.AFR}/{GM.AFR_B}"

*CLC-00-934
V 0.0 5.0 .1 "{EXT.AD2}"
AFR 10.0 20.0 .2 "(({EXT.AD2}+0.03)*3)+7.35"
*CLC-00-935
factor 0.0 2.0 .1 "{CALC.AFR_LC12.AFR}/{GM.AFR_B}"

[Gelf VXR]

I would like to create a calculated pid that looks at commanded spark and compares to delivered spark

I should have read carefully. I missed that. What you want to do won't be too helpfull because of the different tables being used at any time and timing adjustments made by the programming. It will all be recorded on the table I posted.

I have only noted to date for the LS2 these pids that can effect final spark at normal CT and IAT, 85-95C and 15-25C respectively. IAT above 25C and spark reduction occurs, unless I ammend the calibration table.

SPARKADV = delivered spark
KR = retard due to knock
KNKRET = final retard, that reflects KR and burst knock which I have zero'd
SEMRET = Torque reduction spark, I have to investigete this pid further as my delivered spark is no where near commanded spark at low rpm g/cyl?

[Gelf VXR]

I have searched looking for infor for creating custom pids, calculated from existing pids, but Is there any way to create a new Pid that looks up a calibration table as seen in the tune tool {B5101}?

I would like to create a calculated pid that looks at commanded spark and compares to delivered spark

{B5101}/{SAE.SPARKADV}

Any help much appreciated?

Forum Admin?

[Gelf VXR]

Forum Admin?

or

[joecar]

Hi Gelf VXR,

What does B5101 look like...

If it's 1-dimensional, you can create a calc pid using the lookup() function, and then a second calc pid to calculate the looked value divided by SPARKADV.

Here is an example (ignore the part about cal_link.txt): showthread.php?t=8142&highlight=lookup

Cheers
Joe