ezorba96
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« on: December 12, 2023, 02:50:09 PM »
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Hi nefmoto community Edit: Now problem is changed boost cut is gone, Trying to calibrate car for hybrid setup.I trying to learn how to tune my car. I used s4wiki and forums wiki for learning. Still learning and searching. First I want to explain my car's setup LCR 1.8T 2004 Bam Me7.5 EcuSetup:k04-23 hybrid - fmic - cai - complete exhaust - upgraded wastegate I have aem wideband and analog boost controller. n75-n249-sai-evap-vvt deleted. Boost is controlled by electronic boost controller.I started to tune slowly, but I'm stuck at this point. Problem:Until 5800rpm everything is fine car has 1.1 bar boost. Between 5800-6100 rpm boost drops 0.7 bar until redline. Tuning file and short log is attached below, any help is appreciated.  |
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« Last Edit: March 25, 2024, 05:44:53 AM by ezorba96 »
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prj
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« Reply #1 on: December 12, 2023, 03:40:06 PM »
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Remove EBC, re-fit N75. If you value turbo health and transient response, re-fit N249.
Learn to make logs with ME7Logger or VehiCAL logger.
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nyet
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« Reply #2 on: December 12, 2023, 04:00:16 PM »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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ezorba96
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« Reply #3 on: December 13, 2023, 09:32:43 AM »
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Remove EBC, re-fit N75. If you value turbo health and transient response, re-fit N249.
Learn to make logs with ME7Logger or VehiCAL logger.
I will have better logs in shortest time possible. |
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ezorba96
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« Reply #4 on: February 01, 2024, 11:51:21 AM »
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Finally I figured it out how to log with me7logger, really impressed by speed and features Still having issue about boost cut after 5000 rpm , Drops 0.8 from 1.35 , Its same with/without n75. I want to note that car has aftermarket wastegate. With n75 this file gives 1.5 bar boost than dropping 0.8 in 5000rpm, without n75 Its between 1.35 to 0.8. Other details of setup explained in first message I'm trying to do my own file, previously buyed files are crap. Any help is appreciated, Thanks for support. Tuning file, xdf and my logs on 3rd and 4rd gear attached below |
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ratosluaf
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« Reply #5 on: February 01, 2024, 01:40:25 PM »
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start from the scratch
put ecu in applications mode
force 0% wgdc
make your car request more boost than it is in actual, it would be the best if it was higher than final boost
if you have changed your fueling or maf then tune it with 0% wgdc
do wgdc linearization runs
then make your boost request back to normal
then fine tune fuel, do ignition and go ahead
ps. won't work if you have any mechanical faults or your pressure gonna exceed 2550 mbar
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ezorba96
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« Reply #6 on: February 01, 2024, 03:17:04 PM »
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Thanks for inspiration @ratosluaf
New logs with new file, and softer wg spring.
I don't want to exceed 1.5 bar, 1.4-1.3 bar peak and 1.3 bar continious boost until redline is fine for me. Specially when we consider Its k04-23 hybrid.
With this file boost is steady 0.85-0.9 and specified boost almost never exceeds requested boost
KFLDMIX and KFLDRL maps are okey for daily use, turbo is not surging at low rpms, car is drivable. So expect wot (not enough boost), I'm okey with how n75 works.
My question is, which map I need to adjust to have 1.4 peak and 1.3 cont boost. Do I need to increase KFLDMIX & KFLDRL or LDRXN or just something else?
KFLDMIX - KFLDRL - LDRXN - KFMIRL maps , ecu file, xdf, 4th gear wot log (me7logger) this are all attached below
Thanks for helping
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prj
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« Reply #7 on: February 01, 2024, 03:21:31 PM »
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My question is, which map I need to adjust to have 1.4 peak and 1.3 cont boost. Do I need to increase KFLDMIX & KFLDRL or LDRXN or just something else? Your question was answered in previous post. You just do not like the answer. There's also this sticky: http://nefariousmotorsports.com/forum/index.php?topic=12352.0title=Start reading. |
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ezorba96
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« Reply #8 on: February 01, 2024, 11:50:07 PM »
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I appreciate answers, I'm reading all over again, again, again. From s4 wiki, definitions from nyet's website, stickies on forum. The thing I'm stuck is, I'm not sure where to start for calibrating I'm not %100 understanded logic of me 7.5 yet, So I want to make small changes even I need to make 20 flashes. But not sure where to start for increasing boost now I'm more confident about timing and afr they are more easy to watch thanks to aem wideband and obd gauge, so I can adjust them depend on boost change. But not sure lets say now Its flat 0.9 bar, How can make It %10 more boost. When I tried to have 210 load after 4000rpm on ldrxn, car goes limp mode again after 5k rpm Thanks for helping |
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aef
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« Reply #9 on: February 02, 2024, 02:45:36 AM »
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The section from s4tuning wiki with "Boost (rlsol) intervention via rlmax" should help to understand how the ecu works.
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chito
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« Reply #10 on: February 03, 2024, 07:14:05 PM »
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It's probably related to KFMIRL and KFMIOP. I've got similar problems, in the end I had to tune these two maps (loosen?) so it doesn't trigger the limp mode conditions.
I'm not sure though.
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Audi A6 C5 1.8T
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prj
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« Reply #11 on: February 04, 2024, 04:33:49 AM »
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It's probably related to KFMIRL and KFMIOP. I've got similar problems, in the end I had to tune these two maps (loosen?) so it doesn't trigger the limp mode conditions.
I'm not sure though.
There is never any need for them to be anything other than the mathematical inverse. This is straight up bad advice. |
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chito
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« Reply #12 on: February 04, 2024, 05:34:31 PM »
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There is never any need for them to be anything other than the mathematical inverse.
This is straight up bad advice.
I was referring to the max value in KFMIRL and the load axis in KFMIOP. If the value required in KFMIRL is too small for example, 170 on 99% torque request, ECU will go into limp mode at some conditions, although, the two maps are perfectly inversed. It's just an example how KFMIRL relates to limp mode. |
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Audi A6 C5 1.8T
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prj
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« Reply #13 on: February 05, 2024, 02:06:31 AM »
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I was referring to the max value in KFMIRL and the load axis in KFMIOP.
If the value required in KFMIRL is too small for example, 170 on 99% torque request, ECU will go into limp mode at some conditions, although, the two maps are perfectly inversed
It's just an example how KFMIRL relates to limp mode. This is completely wrong. Having KFMIRL/KFMIOP end at a certain value just limits the max spec load to this value, nothing more, nothing less. More misinformation. If you had limp mode it was because your boost pid was not tuned correctly and you were overboosting with a lower load limit. |
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ezorba96
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« Reply #14 on: February 05, 2024, 10:30:37 AM »
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After few logs and 4-5 files, Now I'm getting my target boost levels Since Its k04-23 hybrid, I planning to run 1.4 peak and 1.2-1.1 bar boost until redline. Getting closer to my target. Everytime I just made small adjusments to file make sure everything is fine. This is latest log, car is not going limp mode anymore, still empty under 4k rpm, once I bend the rods, trying to be more careful with tightened wastegate Weather is pretty hot here today 20c celcius, and this is 3rd run. There is some retard I think Its related to high iat but other than that It feels solid. Csv is attached below Thanks for helping |
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