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golfputtputt
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« Reply #15 on: July 10, 2019, 10:16:23 AM »
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Got it reacting predictably.
KRKTE: .04750800
TVUB:
2.056
1.408
1.053
0.811
0.648
-0.8% and -1.6%
Will scale once more and log on my way home and check the results. If it looks promising, i’ll try FKKVS again.
I did not get these results with ev14 550’s even with NOLRA=4
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« Last Edit: July 10, 2019, 10:17:57 AM by golfputtputt »
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prj
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« Reply #16 on: July 10, 2019, 01:16:02 PM »
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Tuning any injectors with known MAF:
1. Set the MAF parameters correctly (or if it's stock, leave as-is).
2. Zero FKKVS and KFLF
3. Set KRKTE to something reasonable
4. Set TVUB to something reasonable.
5. Test
To set TVUB:
6. Check requested vs actual at idle and revving from 1000 RPM up all the way to 5000 rpm:
If fuel gets richer as the revs go up - decrease TVUB (multiply entire table).
If fuel gets leaner as the revs go up - increase TVUB (multiply entire table).
Repeat until it's decent.
To set KRKTE:
7. Do a WOT pull from low RPM to high RPM, check lambda correction.
On wideband - just multiply KRKTE by the average fr_w.
To finish up:
8. Make a matrix graph, which is like FKKVS, but values are fr_w.
Multiply FKKVS values by the values of the matrix graph until fuel is decent around the entire range.
9. For TIPIN/TIPOUT - try tipping in at different RPM's with different strength - if there is a lean spike, increase KFBAKL, if there is a rich spike, decrease KFBAKL.
10. Try tipping out at different RPM - if there is a lean spike - decrease KFVAKL, if there is a rich spike increase KFVAKL.
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Blazius
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« Reply #17 on: July 10, 2019, 02:01:03 PM »
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Tuning any injectors with known MAF:
1. Set the MAF parameters correctly (or if it's stock, leave as-is).
2. Zero FKKVS and KFLF
3. Set KRKTE to something reasonable
4. Set TVUB to something reasonable.
5. Test
To set TVUB:
6. Check requested vs actual at idle and revving from 1000 RPM up all the way to 5000 rpm:
If fuel gets richer as the revs go up - decrease TVUB (multiply entire table).
If fuel gets leaner as the revs go up - increase TVUB (multiply entire table).
Repeat until it's decent.
To set KRKTE:
7. Do a WOT pull from low RPM to high RPM, check lambda correction.
On wideband - just multiply KRKTE by the average fr_w.
To finish up:
8. Make a matrix graph, which is like FKKVS, but values are fr_w.
Multiply FKKVS values by the values of the matrix graph until fuel is decent around the entire range.
9. For TIPIN/TIPOUT - try tipping in at different RPM's with different strength - if there is a lean spike, increase KFBAKL, if there is a rich spike, decrease KFBAKL.
10. Try tipping out at different RPM - if there is a lean spike - decrease KFVAKL, if there is a rich spike increase KFVAKL.
Wait I am confused, how do you log lamda corr at WOT, when its 1'd out ? Am I missing something? |
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golfputtputt
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« Reply #18 on: July 10, 2019, 05:05:33 PM »
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9. For TIPIN/TIPOUT - try tipping in at different RPM's with different strength - if there is a lean spike, increase KFBAKL, if there is a rich spike, decrease KFBAKL.
10. Try tipping out at different RPM - if there is a lean spike - decrease KFVAKL, if there is a rich spike increase KFVAKL.
Thanks Prj, i tried this last time with my 550’s to no effect. Went pretty extreme with the changes to KFVAKL/BAKL with no effect whatsoever, but i’ll give it a go this time. Trims are -.6% and 0.0% Havent had time to log yet. |
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« Last Edit: July 10, 2019, 05:07:19 PM by golfputtputt »
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adam-
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« Reply #19 on: July 11, 2019, 12:43:29 AM »
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...
Very clear instructions. Should be pinned or added to the Wiki. |
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prj
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« Reply #20 on: July 11, 2019, 01:52:10 AM »
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Wait I am confused, how do you log lamda corr at WOT, when its 1'd out ? Am I missing something?
Obviously on a wideband ECU it's not! It's like you have to spell everything out - on a narrowband you would use external afr controller compare actual with target, divide them and get the same theoretical fr_w... |
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IamwhoIam
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« Reply #21 on: July 11, 2019, 03:09:18 AM »
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Wait I am confused, how do you log lamda corr at WOT, when its 1'd out ? Am I missing something?
Everytime I read one of your comments, I just feel like smacking my head against a wall.... |
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I have no logs because I have a boost gauge (makes things easier)
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Blazius
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« Reply #22 on: July 11, 2019, 04:00:30 AM »
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LOL for some reason i completely forgot about wideband lmao, prolly because below that you said "on wideband do x" , so I got confused on how you got lambda corr on wot on narrowband without UEGO wideband.
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prj
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« Reply #23 on: July 11, 2019, 05:11:53 AM »
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LOL for some reason i completely forgot about wideband lmao, prolly because below that you said "on wideband do x" , so I got confused on how you got lambda corr on wot on narrowband without UEGO wideband.
If you only EVER read like ANYTHING before you posted. Read the original post, it SPECIFICALLY says "ON WIDEBAND". The car in the topic is also WIDEBAND. |
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« Last Edit: July 11, 2019, 05:13:24 AM by prj »
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IamwhoIam
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« Reply #24 on: July 11, 2019, 05:16:38 AM »
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If you only EVER read like ANYTHING before you posted. Read the original post, it SPECIFICALLY says "ON WIDEBAND".
The car in the topic is also WIDEBAND.
LMAO relax, he's just upping his post count  |
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I have no logs because I have a boost gauge (makes things easier)
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Blazius
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« Reply #25 on: July 11, 2019, 05:55:34 AM »
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LMAO relax, he's just upping his post count Yeah right . It probably does not help that when I posted that it was basically midnight after a few long days, but whatever. |
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golfputtputt
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« Reply #26 on: July 12, 2019, 09:10:06 PM »
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Dialing in TVUB, it's taking a while. I noticed my idle's hunting.
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golfputtputt
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« Reply #27 on: July 12, 2019, 09:14:50 PM »
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adaptation seems to be correcting as well.
*Edit: yea i dialed my trims down to 0.0% and 0.0%. Took a while. Idle hunting is still there, randomly, most times it idles well, sometimes it hunts.
Also, i shifted KFVAKL up and down .2, .5, and finally, 1. It had no effect. As stated, that is the tipout enrichment? (Thats where i have a .75 lambda enrichment spike.)
Anyone have ideas?
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« Last Edit: July 13, 2019, 06:10:21 PM by golfputtputt »
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golfputtputt
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« Reply #28 on: July 14, 2019, 06:08:18 PM »
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To set TVUB:
If fuel gets richer as the revs go up - decrease TVUB (multiply entire table).
If fuel gets leaner as the revs go up - increase TVUB (multiply entire table).
PRJ, Im a bit hung up on this. Aside from my decel enrichment spikes and the hunting, my actual afr looks to me to be pretty equal to requested +/- 0.05 lambda aprox. Could you provide me with a log example please? |
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golfputtputt
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« Reply #29 on: August 05, 2019, 10:36:27 AM »
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I’ve been working on this issue for some time now.
I’ve hand editted KFKHFM and FKKVS (separately and independently) which produced no effect to AFR’s.
I used the fixxer to edit FKKVS (which produced very close values) and that produced no effect to AFR’s.
I multiplied TVUB in both directions from theoretical values which produced poorly running results. Bucking, heavy backfires at all rpms. In data, lots of idle and cruise oscillation and load change erraticism mainly on the enrichment side.
I returned it to theoretical (provided spec sheet) values
I editted KFVAKL/KFBAKL. Raising KFVAKL (decel enleanment) reduced load change enrichment spikes. (It eliminated them under steady cruise load change (shifts, throttle close) but had no effect in rapid load change scenarios (vehicle standstill clutch engagement in 1st gear, 2nd gear, 3rd gear until steady cruise. Mainly, steep, abrupt rpm changes)
Lowering KFBAKL (accel enrichment) has had no effect on accel enrichment spikes under any conditions.
KRKTE was refreshingly successful and predictable. Zero’s PT trims (checked with VCDS), reduced by multiplying the displayed percentage until zero’ed. Took 3 passes and felt realy good.
Everything else has been a massive entangled unsuccessful struggle. My logs still look like the past ones posted.
Can anyone help?
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« Last Edit: August 05, 2019, 01:10:37 PM by golfputtputt »
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