calculated ve, not corrected (invalid) HELP

[greasess]

The PID "Calculated VE, not corrected" has a red x through it.

Calculated VE, not corrected {CALC.VEN}

Expression:
% = {SAE.MAF.gps}*{CALC.DAT.K}/{SAE.MAP.kPa}/{SAE.RPM}*3445.2/displacement()
is NOT valid because:
Required parameter {SAE.MAF.gps}, at position 14 is not selected.

PID value cannot be determined because
the following error would occur:
Expression not valid: Required parameter {SAE.MAF.gps}, at position 14 is not selected.

Calculated VE, not corrected {CALC.VEN}

Expression:
g*K/kPa = {SAE.MAF.gps}*{CALC.DAT.K}/{SAE.MAP.kPa}/{SAE.RPM}*15
is NOT valid because:

PID value cannot be determined because
the following error would occur:
Expression not compiled

Does this mean that I have to set my engine displacement? How do I do that?

[greasess]

Thanks in advance for any help I get.

[joecar]

No, it means you have to select the MAF pid.

Regarding displacement, it is used only if you use % units for VE; if you use g*K/kPa units, you don't need displacement.

Please use the newer updated calc_pids.txt file form the Calc.VET thread (see your other thread).

[joecar]

From your other thread:

May I redirect you to the newer Calc.VET tutorial...?
Please see post #1 of this: Calc.VET thread
(http://forum.efilive.com/showthread.php?15236-Calc-VET-correcting-MAF-and-calculating-VE-%28in-single-log%29)
( post #1 of that thread is the tutorial; it is newer and has corrections/updates (compared to what you're currently using )

( if you really want a pdf, create a pdf of post #1 and all of its links )

please use the calc_pids.txt file found there.

:)Have a read thru the Calc.VET thread (post #1), it has been newly annotated and clarified.

[greasess]

Thank you for all the help. I'm starting to get the hang of this.

[joecar]

Let us know how you go.