Calc.VET: correcting MAF and calculating VE (in single log)

[joecar]

I have one Question. I´m using V1 and Lc WB and is working great. But If I want to test an AEM 31400 WB, What changes I have to made in calc. pids, I look over the site I can´t find any info.

Regards

Do you have the user manual pdf for the AEM 31-4100...? Can you post it here.

[DocZ28]

Here is the manual

http://tunertools.com/prodimages/AEM...structions.pdf

[joecar]

From the AEM 30-4100 user manual I derive the e transfer function as follows:

0.00V AFR 10.00
4.99V AFR 19.98

combining into linear equation:
(19.98-10.00)/(4.99-0.00) = 2 = (AFR-10)/(V-0)

rearranging, the transfer function is: AFR = 2*V + 10

This is the exactly same as the PLX transfer function... so you can use the pids CALC.AFR_PLX1.

[DocZ28]

So I have to change this

*CLC-00-110
factor 0.5 1.5 .4 "{GM.EQIVRATIO}*{CALC.AFR_LC11}/14.7"


for this? *CLC-00-110
factor 0.5 1.5 .4 "{GM.EQIVRATIO}*{CALC.AFR_PLX1}/14.7"

[joecar]

So I have to change this
*CLC-00-110
factor 0.5 1.5 .4 "{GM.EQIVRATIO}*{CALC.AFR_LC11}/14.7"


for this?
*CLC-00-110
factor 0.5 1.5 .4 "{GM.EQIVRATIO}*{CALC.AFR_PLX1}/14.7"

Yes, exactly.

[TunasTwins]

Looking for some help here folks. I had followed WeatherManShawn's original tutorial with much success. After an extended break from tuning, I was saddened to read the news of his passing.
After some hardware issues from migrating to a new laptop, I finally have my unconventional set up working again. I use tunercats for my flashing and EFILive via the autotap ATUSB cable. Works a charm but man I would LOVE LOVE LOVE for my wife to give me the green light on a v2 flashscan! Anyhow, can you look at my calcpids file please? Something needs to be multiplied by 100 as my histogram shows the VE table as 1.xxxxx and I need it to be 1xx.xxxi in the scanner. (I created a simple excel sheet to do the multiplication for me for now.) Also, I am NOT using a WB as I have yet to tap into my AC/EGR 5V signal to circumvent the autotap cable. Sadly, my LM-1 WB has been sitting in a bag on the shelf for a couple of years now. I would love to have a turnkey setup for replacing the NB on multiple vehicles; using the simulated NB output of the old LM-1. Thanks guys!

[joecar]

Looking for some help here folks. I had followed WeatherManShawn's original tutorial with much success. After an extended break from tuning, I was saddened to read the news of his passing.
After some hardware issues from migrating to a new laptop, I finally have my unconventional set up working again. I use tunercats for my flashing and EFILive via the autotap ATUSB cable. Works a charm but man I would LOVE LOVE LOVE for my wife to give me the green light on a v2 flashscan! Anyhow, can you look at my calcpids file please? Something needs to be multiplied by 100 as my histogram shows the VE table as 1.xxxxx and I need it to be 1xx.xxxi in the scanner. (I created a simple excel sheet to do the multiplication for me for now.) Also, I am NOT using a WB as I have yet to tap into my AC/EGR 5V signal to circumvent the autotap cable. Sadly, my LM-1 WB has been sitting in a bag on the shelf for a couple of years now. I would love to have a turnkey setup for replacing the NB on multiple vehicles; using the simulated NB output of the old LM-1. Thanks guys!

Hi Josh,

Yes, we're still saddened of his untimely passing.

Will you be using any wideband...?

[ the LM-1 cqn be made to replace the NB by providing the simulated NB signal and the WB tuning signal, both at the same time (since it has two analog outputs) ]


Get a new fresh copy of the calc_pid.txt file from post #1 of the Calc.VET thread: Calc-VET-correcting-MAF-and-calculating-VE-(in-single-log)


If you will be using a wideband, then look at posts #476 and #477, you will need to do the same thing to CLC-00-110 with your wideband pid {CALC.AFR_LM11}.

If you will not be using a wideband, then you have to change occurances of SELBEN to WO2BEN in CLC-00-305:

*CLC-00-305
%                  0.0         100.0       .2  "{CALC.SELBEN}*{CALC.VEN.%}"
VE                 0.0           2.468     .4  "{CALC.SELBEN}*{CALC.VEN.VE}"

but you won't be able to tune anything that is not closed loop.


In the tunetool set the VE units to g*K/kPa, and in the scantool VE map use the pid CALC.VET with units [g*k/kPa]...

i.e. instead of seeing 0-100% for VE you will see 0-2.4 g*k/kPa.

[TunasTwins]

Thanks Joecar. I dont currently have the setup to log the wideband to efilive, unless you know a way with my autotap cable. As far as the VE table goes, I am seeing g*k/kpa and the numbers are very similar to my VE table, just off two decimals?

[joecar]

Oh, I forgot that you might be logging wideband via AC pressure sensor or EGR position sensor...

if this is so then we can create a wideband AFR/lambda pid using the EGR voltage...

you might have to enable EGR in the tunefile.

[TunasTwins]

That sounds great Joecar. That would seal the deal with my setup. This is on my wifes 05 4.8LTahoe. i'd like to add to the thread for everyone. Ill post a log soon. Even a scan only V1 would be deluxe!