lambda instead of afr

[Webbs]

So I want my logs to display lambda instead of the afr I am currently displaying. From what I have been reading I need to do the following:

Open the calc_pids.txt file

Edit the working CLC-00-002 0.0 2.0 .2 "{CALC.AFR_WBC1.AFR}/{GM.AFR}

To the new CLC-00-002 0.0 2.0 .2 "{CALC.AFR_WBC1.AFR}/{GM.AFR}/14.7

Is this correct?


W~

[joecar]

No... if both numerator and denominator are AFR based, then the stoich AFR cancels out (if they assume the same stoich AFR).

If the wideband assumes a different AFR (say 15.2) than the PCM (say 14.6) then the correction factor becomes:
"({CALC.AFR_WBC1.AFR}/15.2) / ({GM.AFR}/14.6)"

which simplifies to:
"{CALC.AFR_WBC1.AFR}/{GM.AFR}/15.2*14.6)"

[joecar]

There are two problems with GM.AFR:
- GM.AFR is based on table B3601 in the calibration file,
- I have seen GM.AFR not get updated (compare with GM.EQIVRATIO in a log);

so I like to use GM.EQIVRATIO instead of GM.AFR...

noting that GM.EQIVRATIO equals 14.7/GM.AFR (i.e. 1/lambda), then your correction factor becomes this:
"{GM.EQIVRATIO}*{CALC.AFR_WBC1.AFR/14.7"

assuming your Wideband Commander assumes stoich to be 14.7 (check your WBC user manual to see what default stoich AFR is).

[Webbs]

Joecar,

I tried to build it and I got this :

Error report generated by EFILive at 12:45:22 on Jan 31, 2014

Error code: ERR_CONFIG/92
C:\Users\Documents\EFILive\V7.5\User Configuration\calc_pids.txt(54): List index out of bounds (4).

EFILive Version: 7.5.7 (Build 245)

Platform: Windows NT
Version: 6.1 (build 7601)
Processor type: Pentium 1397MHz

Directories
Temporary Cache: C:\Users\Documents\EFILive\V7.5\Temporary cache
Logged Data: C:\Users\Documents
Customers: C:\Users\Documents\EFILive\V7.5\Customers
Configuration: C:\Program Files (x86)\EFILive\V7.5\Configuration
Exported Data: C:\Users\Documents\EFILive\V7.5\Exported data
Images: C:\Users\Documents\EFILive\V7.5\Images
Sounds: C:\Users\Documents\EFILive\V7.5\Sounds

I have attached a copy of my calc.pids.txt

W~

[joecar]

Try this (I corrected your file).

[joecar]

I replaced this:


*CLC-00-006 0.5 1.5 .4 "{GM.EQIVRATIO}*{CALC.AFR_WBC1.AFR}/14.7"
factor


with this:


*CLC-00-006
factor 0.5 1.5 .4 "{GM.EQIVRATIO}*{CALC.AFR_WBC1.AFR}/14.7"

[Webbs]

Thank you!!! :jump: