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nyet
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« Reply #30 on: February 18, 2012, 03:59:10 PM »
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why doesn't it? ignition, wg, or throttle plate?
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masterj
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« Reply #31 on: February 18, 2012, 05:17:50 PM »
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why doesn't it? ignition, wg, or throttle plate?
Gonna post some logs tomorow regarding this thing  I just noticed this because I have boost gauge |
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masterj
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« Reply #32 on: February 21, 2012, 05:43:46 AM »
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Ok, did some more logs today Looks like I have some AFR problems and that ends up as being way to high EGTs. Please help me analyze these logs, to finally find which component of my car is dying... Now I understand why I have such a bad fuel economy - o2 sensor is trying to enrich mixture to help cool down egts... But why mixture is lean?? Only thing I could suspect is MAF, but it has steady curve of airflow... Any ideas? |
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« Last Edit: February 21, 2012, 05:45:52 AM by masterj »
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nyet
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« Reply #33 on: February 21, 2012, 10:34:40 AM »
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If you are having AFR problems, get a wideband sensor. DO NOT GUESS. Still, you can log narrow band voltages (I dont see them in your log) until then.
Also, you will want to numb BTS quite a bit if you are running a properly scaled MAF.
the EGT model will go sky high.
just monitor your REAL EGTs to make sure you stay safe.
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nyet
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« Reply #34 on: February 21, 2012, 10:37:37 AM »
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Also, I REALLY dont understand your WGDC.
It makes absolutely no sense. Your KFLDRL must be completely screwed up. Can you log pre-lin WGDC?
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« Last Edit: February 21, 2012, 10:39:10 AM by nyet »
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Gonzo
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« Reply #35 on: February 21, 2012, 10:49:44 AM »
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If I'm not mistaken, this car IS wideband.
I think I can fix most of your issues. When I find a little time, I'll PM ya with some help.
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masterj
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« Reply #36 on: February 21, 2012, 11:41:15 AM »
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If you are having AFR problems, get a wideband sensor. DO NOT GUESS. Still, you can log narrow band voltages (I dont see them in your log) until then.
Also, you will want to numb BTS quite a bit if you are running a properly scaled MAF.
the EGT model will go sky high.
just monitor your REAL EGTs to make sure you stay safe.
My car HAS wideband o2 sensor  |
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masterj
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« Reply #37 on: February 21, 2012, 11:43:30 AM »
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Also, I REALLY dont understand your WGDC.
It makes absolutely no sense. Your KFLDRL must be completely screwed up. Can you log pre-lin WGDC?
I haven't even defined KFLDRL map! What does this map do? |
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masterj
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« Reply #38 on: February 21, 2012, 12:11:10 PM »
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Also, I REALLY dont understand your WGDC.
It makes absolutely no sense. Your KFLDRL must be completely screwed up. Can you log pre-lin WGDC?
I'll log prelin and post it tommorow maybe this will clear up some mysteries... |
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masterj
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« Reply #39 on: February 21, 2012, 12:14:09 PM »
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If I'm not mistaken, this car IS wideband.
I think I can fix most of your issues. When I find a little time, I'll PM ya with some help.
Could you please direct me to maps that might need changing? That wastegate duty cycle is really weird... Looks like it's always open, even on max boost  |
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nyet
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« Reply #40 on: February 21, 2012, 12:55:06 PM »
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yea, it should stay at 95% much longer, then fall below just before req meets actual (D term), then even out when it meets (P term) and stabilize (I term).
You'll have to read up on PID controllers.
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masterj
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« Reply #41 on: February 22, 2012, 01:23:48 AM »
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Also, I REALLY dont understand your WGDC.
It makes absolutely no sense. Your KFLDRL must be completely screwed up. Can you log pre-lin WGDC?
Just defined KFLDRL map in my bin... Looks normal, doesn't it? |
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masterj
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« Reply #42 on: February 22, 2012, 08:05:55 AM »
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A little fix to the LDIATA and new logs. Still very weird wastegate operation... Should I try to edit KFLDIMX map or something? What other maps could control wastegate operation??
P.S> Why is my EGT (part protection) so high? I have no cat, no post-cat o2 sensor and no sai, so maybe my egt model is wrong?
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cactusgreens4
Full Member
Karma: +2/-0
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Posts: 110
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« Reply #43 on: February 22, 2012, 09:12:32 AM »
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yea, it should stay at 95% much longer, then fall below just before req meets actual (D term), then even out when it meets (P term) and stabilize (I term).
You'll have to read up on PID controllers.
Where can I get more information on this? |
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nyet
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« Reply #44 on: February 22, 2012, 09:40:31 AM »
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A little fix to the LDIATA and new logs. Still very weird wastegate operation... Should I try to edit KFLDIMX map or something? What other maps could control wastegate operation??
actually that doesn't look bad. it's capped at 95% where it is supposed to be. The D term is a BIT aggressive, but not bad (it is pulling wg a bit early) if you look at the pressure deviation when it starts cutting. P.S> Why is my EGT (part protection) so high? I have no cat, no post-cat o2 sensor and no sai, so maybe my egt model is wrong?
Not sure, but you could numb BTS a bit. |
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