Alright yesterday I was using my AFR Error % histogram and it worked perfectly fine. Today not so much. WTF... Here is some screenshots and a log.
Alright yesterday I was using my AFR Error % histogram and it worked perfectly fine. Today not so much. WTF... Here is some screenshots and a log.
What do you mean by not working? It won't plot anything, or it says unsupported parameter? Everything looks good in the screen shot. You're only plotting afr < 14.60 so if you're leaner than stoich, it won't plot anything.
2003 Chevy Silverado Daily Driver, 408 Iron Block,
LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.
What should I normally be plotting if not < 14.60?Originally Posted by oakley6575
Now I was richer then 14.6 and was having cells with 12's and 13's with nothing showing up so that confuses me. When I was getting a reading it was saying I was 49% off which when looking at the wide band I was never that far off...
In the function I used is there any spaces or all concurrent for example:
[SENS.121]_<14.60
[SENS.121]<14.60
I was attempting to use it for VE tuning so is the <14.60 even necessary or would it make more sense to set it to >10 or <18?
Thanks in advance. When it was working it worked great but then it went haywire so i ditched it. I am guessing I knew enough to use it but not the full use of it...
You need to add 100* in front of [AUX.20012] in your AFR pid. Why not use the default AFR Error pid? Works fine for me.
Russ Kemp
The default AFR error pid only uses the narrowband correct? And the one I was using incorporates the accuracy of the wideband? Or am I mistaken again?
Also when I had 100* there the the AFR Error was in the thousands range?
No the afr error pid references the wideband, not narrowbands. Like Russ said, use the default.
And about the filter, if you're ve tuning, don't use that filter or it would only plot rich conditions. Just delete the filter so it will show you your real afr error everywhere.
2003 Chevy Silverado Daily Driver, 408 Iron Block,
LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.
My default does not reference my wideband it reference Sensoe 120 which is air fuel ratio but it is not connected to my wideband so that has to be the narrowband right? So in that regard I would swap in AUX.20012 and all would be good?
SENS.120 is Air Fuel Ratio (Not sure where it pulls that from)
SENS.121 is Air Fuel Ratio Commanded (Pulls based on what is set up in the tune right?)
AUX.20012 is my LC-1 Wideband
So which of these equation for Air Fuel Error is correct then:
100*[AUX.20012]-[SENS.121]/[SENS.121] Mine is set up this way
100*[AUX.20012]-[SENS.120]/[SENS.120] The default looks like this thats why I ask for clarification.
or should it strictly be the default of:
100*[SENS.121]-[SENS.120]/[SENS.120] which then begs the question of what SENS.121 is actually pulling from? wideband? narrowband?
Last edited by cruiser787904; 05-21-2012 at 12:03 AM.
If its easier and you have a screenshot of your known good Air Fuel Ratio Error Pid that would put my mind at ease...Thanks for your help I tried every possible configuration and now my head is twisted and I am not sure what is what. So I just need to know what works...
I appreciate it...
Last edited by cruiser787904; 05-21-2012 at 12:04 AM.
I don't know why the default wouldn't work for you. What does it read when you use it?
2003 Chevy Silverado Daily Driver, 408 Iron Block,
LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.
At this point I am thinking the whole problem I was having is because I was grabbing a custom air fuel ratio error, rather then the one that defaults in the histogram, that was not set correctly rather then rolling with the default.
So if I delete the function in the histogram with <14.60 and leave the default air fuel ratio I think I would be golden. I would still like to know were sens.120 is getting a wideband signal unless it is set to just reference which ever wideband you are using in the EIO input to make one size fits all.
I will test with it tomorrow...
With this air fuel ratio pid being logged and the stock histogram I got wonky results. Here is the air fuel ratio pid:
This is what the log looked like. Notice the airfuel ratio error in the config reading in the 1000%.
Last edited by cruiser787904; 05-21-2012 at 12:59 AM.
yes. That's correct
2003 Chevy Silverado Daily Driver, 408 Iron Block,
LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.
I just tried all 3 functions above and the lowest airfuel ratio% I got was -46. One was in the 7 hundreds and the other was in the thousands.
That was with the default histogram, and Air Fuel Ratio Error set up with 3 separate functions.
You're making this way too difficult. Start over with a default config. Stop adding user defined pids except for your wideband.
2003 Chevy Silverado Daily Driver, 408 Iron Block,
LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.
So is this function correct for AFR Error?
100*[SENS.120]-[SENS.121]/[SENS.121]
OR this one
100*[SENS.121]-[SENS.120]/[SENS.120]
Which is the default?
2003 Chevy Silverado Daily Driver, 408 Iron Block,
LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.
In the primary table, right click, select insert. Under user defined, there will be an already built parameter for afr error. Double click on it. DONE
2003 Chevy Silverado Daily Driver, 408 Iron Block,
LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.
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