First Crack at CALC.VE - Question on AutoVE > 100

[TaTommy]

Hi,

I thought I had it all right, until I saw most of my Auto_VE map was at of well above 100%

I have a 03 Z06 with a Callaway Honker, LT headers, and a LC2 Wideband. Lots of track days, so I want to make sure my A/F is safe. Seems to run around 13.0 during WOT even with commanded ARF at 12.0

I THINK I setup all the PIDs/Maps and calc_pids.txt correctly. However, as mentioned above my Auto_VE is off.

One thing which may be the issue, is how to get the values from my LC2 AFR into the equations? The tutorial show EXT.WO2AFR1 as the PID, but that is 0 in my data collection. I use EXT.AD1 and CALC.AF_LC11 to get my AFR values....

Please help me figure out where I went wrong.

https://www.dropbox.com/s/xhd3bdx891z7mcb/vemap.jpg
https://www.dropbox.com/s/s54r6l11008adf9/calc_pids.txt
https://www.dropbox.com/s/veqxykq4krkg80t/Data.jpg

Thank you!!!

Tom

[joecar]

Hi Tom,

Do you have a FlashScan V1 or V2...?


See post #1 here: Calc.VET thread (http://forum.efilive.com/showthread.php?15236-Calc-VET-correcting-MAF-and-calculating-VE-(in-single-log)) ( post #1 is the tutorial... follow any links it mentions )

( the Calc.VET procedure is an updated version of the Calc.VE procedure that it supercedes )

Read thru it, and please post any questions about it here in this thread.


Use units g*K/kPa for VE (it will make things easier).

[TaTommy]

Hi Joe,

It is a FlashScan FSP v1.2.

So in reference to this step: "EXT.WO2LAM1 is the wideband measured lambda which V2 reads from the wideband over the serial comms (null modem cable);
so to use this you have get your V2 reading serial comms data from the wideband."

How do I get my LC2 AFR into that? Do I have to modify the following to include my wideband pid?: "This calc_pids.txt calculates the correction factor as follows (see CLC-00-110): "{GM.EQIVRATIO}*{EXT.WO2LAM1}"

Thank you again!

Tom

[joecar]

Tom,

You have a FlashScan V1, so you can't do serial comms... in the Calc.VET thread, goto section II.


If you do get your hands on a V2, see here:


V2 serial/digital input (LC-2):
LC-2-Digital-Wideband-anyone-try-it-out (http://forum.efilive.com/showthread.php?23169-LC-2-Digital-Wideband-anyone-try-it-out)

[TaTommy]

This helps, I was using the ANALOG output (I guess it's pseudo analog since its a digital device). I will try to jimmy up the serial connector.

I will post the results either way. Thank you so much.

[joecar]

Tom, V1 does not have serial comms ability.

[joecar]

You have a FlashScan V1, so you can't do serial comms...

so, in the Calc.VET thread, goto section II.

[joecar]

Tom, I reworded post #4 to show you what would be needed if you had a V2.

[TaTommy]

You have a FlashScan V1, so you can't do serial comms...

so, in the Calc.VET thread, goto section II.

Will give it a shot! Thanks again for the guidance.

[TaTommy]

OK, so I finally got around to trying the Calc VE process. The wideband data is getting in there now, so that is great.

However, there is one unhappy PID which is causing trouble: GM.DYNAIRTMP_DMA It just has a Red X through it. I am not sure if I am missing related PIDs, but I dont think so.

Anyway, even without that, I was able to adjust the MAF, and my LTRIMS are basically 0 in both banks, so that is great.

I have not adjusted the VE Table yet, because I am getting no data there from the VE Adjustment Map.

And finally, I dialed in the AFR at WOT to about 12.8 to 13.0 across the RPM range, and it feel fantastic. However, to achieve that, I had to cheat and set the PE by RPM to 12.0 (so it is off about a point....)

Can I just readjust my MAF even more so commanded AFR matches what my wideband shows? Or should I really get the VE Table in line first?

Thanks!!!!

[joecar]

If your PCM does not support the pid GM.DYNAIRTMP_DMA, then see section III.6 in post #1 of the Calc.VET thread, it tells you what needs to be done.

[TaTommy]

If your PCM does not support the pid GM.DYNAIRTMP_DMA, then see section III.6 in post #1 of the Calc.VET thread, it tells you what needs to be done.

ahhhaaa! Will waste some more fuel tomorrow and give it a shot :)