what is this log telling you?

[JOHNGEAR]

hi, looking at this log, is it telling me that i have a bad o2 sensor or injectors(one side) or a intake leak? thanks

[5.7ute]

I would switch the o2 sensors over & do another log. That would be the easy way to distinguish between a cooked sensor or mechanical issue.
I would tend towards a bad injector if the problem didnt switch banks with the sensor. An airleak would max the trims to get it reading that rich, & your trims are 0.
Might be worth logging STFT as well.

[JOHNGEAR]

good idea, thank you very much

[5.7ute]

No worries. Post the log when you have switched the sensors.

[JOHNGEAR]

So i changed my o2 sensors(did not swap them)back to the ac delco from bosch and here is my tune and log.

[5.7ute]

You must be cold where you are. We are getting 43deg c compared to your -5.
something odd going on the way none of those sensors are switching. I will have a look through your tune file & see if I can find anything there.

[JOHNGEAR]

yes it is cold here and saturday it will be -30c, thanks for all input you may offer.
a bit on this motor set up, vortech v1- 2.87 pulley
97 vortec 5.7
comp cams #08-301-8
#26918
#787
#1417
#648
upgraded spider injectors
i think that i will increase my pulley so to drop some boost(too much for this injector set-up)and i think that is it.

[joecar]

Set B3801 to Enable and B4205 to stock (something like 90-100°F).

[JOHNGEAR]

thank you but i should tell that this is a speed density tune,will these changes then be correct?

[5.7ute]

thank you but i should tell that this is a speed density tune,will these changes then be correct?

Those changes will enable the trims, allowing closed loop fuelling. However, since this is a COS, semi open loop should be enabled anyway as you are commanding stoich in B3647. Something is preventing the o2 sensors from switching, either mechanical from two dead or uncompatible sensors, or a tune issue. I will get back to you if I find something in the tune.

[5.7ute]

Johngear, do you have the stock file from your vehicle?

[JOHNGEAR]

hi, yes, this is not the stock but it is what we(L31 owners) are told to use.

[5.7ute]

What are the flow rates of the injectors you are running? Things just dont seem to be calculating out to me. 8-9ms PW at a 700 idle for example. Duty cycles over 200% at Wot.
Do you have access to a wideband to get some reliable AFR's from?

[JOHNGEAR]

hi, yes i do now have a wide band(duel) from F.A.S.T.
but have not welded new bungs yet and do not fully understand just how to make these combatible with efilive.
using stock injectors(was poppet style now true injectors) i think 19#ers

[joecar]

Oh, what 5.7ute said, you should see switching activity from the EQ1.00 cells in B3647.

I'm wondering if your injectors are delivering more fuel than you're expecting...?

You have 19 lb/hr injectors rated at 43.5 psi...?

If so, then those flow 22 lb/he at 58 psi... this is 2.76 g/s, your IFR table says 2.91 g/s... that's a 5% difference, is this what you calculated Mick...?

[joecar]

Your IFR table is 5% above, which will make the injectors deliver 5% below...

I think your VE table may be not correct (have you make sure to disable semi open/closed loop during tuning...?).

I think maybe your NBO2's are not responding correctly.

[JOHNGEAR]

I do remember talking about correcting the VE before with you but have not done this as of yet(wideband issue) but if my injector set-up is incorrect then wont the auto VE become harder to complete?

[joecar]

If the injector table is all incorrect by the same factor, then after doing AutoVE the VE table will simply be all out by the same factor and you will still get BEN's converging to 1.00 (actual AFR equals commanded AFR).

If your VE is out by unknown/uncorrected then semi open loop (SOL) trimming may not be able to happen since the both commanded and actual AFR's both have to be at stoich...

i.e. the actual AFR is far enough away from the commanded AFR that the PCM can't trim it... so your new NBO2 sensors show the tendency you see in your log.

[5.7ute]

i.e. the actual AFR is far enough away from the commanded AFR that the PCM can't trim it... so your new NBO2 sensors show the tendency you see in your log.

Thats one of the thoughts that went through my head, but you would think though that the STFT would max out. Unless of course the PCM sees the high voltage of the sensor & thinks it is not ready.

[JOHNGEAR]

am i on the correct path here?

[JOHNGEAR]

i'll try this
http://img189.imageshack.us/img189/1971/ccf1212200900000.th.jpg (http://img189.imageshack.us/i/ccf1212200900000.jpg/)

[5.7ute]

How are you going with this?

[joecar]

If you have an LS1 PCM, then you could use COS5 which has a boost VE table, this is how you would get more fuel in a precisely controller manner.

[5.7ute]

If you have an LS1 PCM, then you could use COS5 which has a boost VE table, this is how you would get more fuel in a precisely controller manner.

Hi Joe. He is using 02020003 which has a boost VE table. (I think you may have accidently posted in the wrong thread)

[mr.prick]

You need bigger injectors, the shot Joe posted of your log shows IDC @ 271% :eek:

[JOHNGEAR]

i changed some things and logged it

[joecar]

If you have an LS1 PCM, then you could use COS5 which has a boost VE table, this is how you would get more fuel in a precisely controller manner.Yes, I may have been thinking of someone else... loss of context...:doh2::doh2::doh2::doh2:

[5.7ute]

Yes, I may have been thinking of someone else... loss of context...:doh2::doh2::doh2::doh2:

I thought something like that may have happened.


Johngear, have you the logs to go with those tune files?

[JOHNGEAR]

sorry i posted the wrong things, try this..

[5.7ute]

The trims are saying you are still too rich. Have you had any luck getting the wideband installed?

[JOHNGEAR]

hi, it hit -43c and a wind chill of -57c so i hope that it warms up this week end so i can install the duel F.A.S.T. wideband, oh is there a link or a pdf file on how to use the F.A.S.T. type with the V2?

[5.7ute]

Have a look through this. http://forum.efilive.com/showthread.php?t=9670&highlight=FAST+DUAL+WIDEBAND
There is quite a few threads on here that should be able answer your questions, but if you get stuck dont hesitate to ask.

[JOHNGEAR]

well i now have duel wide band sensors(F.A.S.T.)and now i can see why it tries to stall sometimes(too rich) but have not set up auto ve yet
here is the tune & log that i just did...
i may need help to understand the pid and map set up for the auto ve
thanks

[JOHNGEAR]

problem, i cannot find the calc.ben pid? why?

[joecar]

The F.A.S.T. pids are CALC.AFR_F1 and CALC.BEN_F1.

[JOHNGEAR]

i think i found it and here is where i am right now...

[JOHNGEAR]

now when i am to filter out things, i cannot complete this move because i can't find (TPS moves too fast or low coolant temp)name.

[JOHNGEAR]

The F.A.S.T. pids are CALC.AFR_F1 and CALC.BEN_F1.

i can't find these so i used calc.ben_lc11
calc.afr_lc11
hope these are correct.

[JOHNGEAR]

oh, this is the correct tune ...with the log(autove)

[joecar]

i can't find these so i used calc.ben_lc11
calc.afr_lc11
hope these are correct.Those won't give you the correct AFR...

Which software build do you have...?

Here is the latest, build 101: showthread.php?t=12587 (http://forum.efilive.com/showthread.php?t=12587)

To find those pids, goto the PIDs tab, click on the column heading "Parameter" to sort alphabetically on this column, then scroll down until you see CALC.AFR_F1 and CALC.BEN_F1.

[joecar]

If you're going to do AutoVE, set the stoich AFR cells in B3647 to slightly non-stoich AFR... otherwise the stoich cells will enable STFT trimming on those cells.

[joecar]

Also, set A0012, A0013 to some in-range value.

Also, unrelated, Set D0961, D0962 to 100%.

[JOHNGEAR]

ok, how about this...and thanks for the needed update,,,

[JOHNGEAR]

now for the second pass,,,
i will post a log of the new tune 3 soon

[JOHNGEAR]

i will add this,
one problem, it wont start very good(had this from the start when installed this cam),is there a tune to correct the starting issue?
thanks

[joecar]

Something's going wrong, the injector duty cycle is going above 100% by a significant amount, and you're getting sawtooth pattern KR indicating real knock... I don't see the wideband AFR in your log.

From your previous post, the wideband measured AFR was way rich, again indicating something's not right...

Post some more logs in OLSD showing wideband AFR and BEN, and the tune file from which the log file came from.

[JOHNGEAR]

i don't know what happened here but i will try to correct this for the next log