Good VE numbers except at idle?

[hquick]

Hi All,
I'm currently AutoVE'ing my 98 Burb and after just running a long, high speed log I have good numbers throughout the logged area of the VE table.
I seem to be very rich at idle....I can smell the fuel and my AFR is around 10.8 to 11 or so.
I'm having trouble hitting some of the low RPM, high Kpa cells but if I apply the log to my VE table I end up with a huge downward spike in the idle area.
What should I do?

Edit: I have the 0411 PCM and using COS3.
The burb is Whippled and I'm using the PLX wideband and 2 bar sensor

[mr.prick]

you might want to tell everyone witch wide band you are using.
and why is the log a zipped file?

[hquick]

Sorry, maybe you haven't had your coffee yet
It says in the last line of my post PLX wideband. (that edit was done 10 seconds after I posted).
I think, unless I'm missing something, I can't upload a log file as is.
Maybe because of the size of the log...it's a good long log.
I'll have another look.
It's 5.22am here....so now it's time for my coffee!

[eboggs_jkvl]

You can upload a TUN file on here. THe problem might be the size of the file. How big is it? I tried to updoad as an attachment a 1 meg file and it would not load. I think the EFILive webmaster needs to increase the file size on the TUN file allowance a little bit bigger. Might I recommend 1.25 megs or so?

Elmer

[hquick]

Yeah....you're right Elmer.
My .tun file uploaded OK but my log file which is 900k won't.
Here's an idle log I took this morning from crank to op temp (RAFPN).
Can somebody please tell me what this means?
I'll run another log this afternoon on RAFIG.

[joecar]

Howard,

Some observations:

a. B3647 has areas set to EQ 1.00 (AFR 14.63)... AutoVE tuning won't work in those areas since EQ 1.00 enables "semi-closed loop mode" where the STFT's are used to trim the AFR around EQ 1.00 (AFR 14.63); during AVE tuning, you want to set those areas to something like EQ 1.03 or AFR 14.55.

b. VE table seems a little high at idle (even though there's a downward spike there) [and my comment means the area surrounding idle seems too high], which may be causing your idle to be so rich; but see comment a.

c. unrelated, B3647 is leaner in the high map low rpm corner... just think what happens when you open the throttle and pull from low speed in high gear... I think you need to run richer in that corner (it will also prevent knock in that situation).

Cheers,
Joe

[hquick]

Thanks Joe,
that's unusual.
I had those numbers set to 14.63 and after reading on a different thread that 14.63 is EQ 1.0 I changed them to 14.70 as suggested, and that is what it was displaying for me.
I just tried changing the table to display EQ and sure enough....1.0???
So, does that mean the converter within the software is wrong?

[hquick]

I just changed to EQ 1.03 which shows as AFR 14.25.
I sure hope I don't have to make a 170kph log again

[hquick]

OK. Just for the hell of it I just changed the table values to AFR 14.55 and then checked the EQ by converting to EQ.
When I reloaded the tune and checked B3647 it displayed as 1.01???
I think the converter must be wrong???

[joecar]

Howard,

In the tunetool, go Edit->Configure Display Units, and find B3647 and set it's precision to more digits (0.0000).

Something to note: the various tables store discreet values, and I belive the tunetool rounds to the closest; you have to close/reopen the tunetool to see the rounded values;