tadope
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« on: June 12, 2021, 05:01:27 PM »
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So ive had this issue with boost cutting off after 5k rpm.
and I finally found the source.
many thanks to whoever made me7logger, and visualme7logger. SO AMAZING.
anyways.
I attached two logs.
you can see my adaptation partial (correct me if i'm wrong, but is this the same as longterm fuel trims?) = 9.9997E-1 (wtf does 9.9997E-1 mean??)
and you can see the n75 duty cycle = at 5.5k rpm it goes to zero.
idle adaptation is zero, ignition retard is ok 0-3deg, knock voltage is a bit high 20-29v.
actual boost is not even close to requested boost.
fuel injector duty cycle hovers close to 100%
This is the second pull. The first pull had normal n75 duty. And I did a bunch of pulls after this one. the n75 kept shut down the whole time.
it will probably come back when I restart the car.
I'm assuming this is "soft limp mode"
2001 audi tt amu. stage 1 tune. stock fueling. stock n75. 3" catless. 80mil tip.
Things replaced while troubleshooting this issue: (used n75, map, iat, vss) (new MAF, fuel filter, coils, plugs)
209k miles on the car
I'm installing a new fuel pump tonight. What else could it be. FPR???
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tadope
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« Reply #1 on: June 12, 2021, 05:02:54 PM »
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Here are the logs
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Norwegian1.8T
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« Reply #2 on: June 13, 2021, 01:29:44 AM »
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Post logs please
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tadope
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« Reply #3 on: June 13, 2021, 04:01:46 AM »
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Um they are right there. Second post
I have a feeling im leaking air through my dipstick. Checking that in the morning.
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nyet
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« Reply #4 on: June 14, 2021, 12:56:30 PM »
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Um they are right there. Second post
I have a feeling im leaking air through my dipstick. Checking that in the morning.
Those are pictures not logs. |
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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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tadope
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« Reply #5 on: June 14, 2021, 02:55:56 PM »
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oops.
here is fresh logs from today.
one log is just idle. the other is a 2nd gear pull until 5500rpm.
car has not hit limp mode yet in this state.
I'll post a reply with the limpmode log.
adaptation partial is my biggest smoking gun. wtf is up with that 9.9997E number?@? does that just mean maximum or something?
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tadope
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« Reply #6 on: June 14, 2021, 02:58:04 PM »
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Here is the log where you can see it going into soft limp mode.
this was a couple days ago.
Just fyi. the engine idles flawlessly. and makes 260break (according to maf). I can't tell AFR wot because no wideband though.
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« Last Edit: June 14, 2021, 02:59:45 PM by tadope »
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nyet
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« Reply #7 on: June 14, 2021, 04:21:22 PM »
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Seriously? You can't see anything wrong with that?
lde doesn't mean anything to you?
With wgdc pegged at 95%?
Nothing at all?
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« Last Edit: June 14, 2021, 04:23:42 PM by nyet »
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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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tadope
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« Reply #8 on: June 14, 2021, 05:12:45 PM »
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Well yes, I agree. It is all messed up. But that's why i posted. I need your help to find out why.
What is lde? Sorry that doesn't mean anything to me.
I didn't write the tune. And I don't think the tune is the source of the issue.
I've had multiple diferent tunes, and this problem shows up either way.
I'm not considering the wg duty levels as a major cause because I had a bad n75, that basically ran the wg fully shut.
And the turbo would spike 21psi then hold 15psi. Seemed like it was within safe levels. no excessive knock, or ign retard.
So that tells me that whatever major issue is going on, it is outside of the n75.
ALSO. The adaptation, and lamba is not functioning.
WOT adaptation partial (fra_w) 9.9997E-1 , lambda control 1E0, lamda control avg 1E0
IDLE lamda control just sits at 1. shouldn't it be bouncing around a little?
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nyet
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« Reply #9 on: June 14, 2021, 05:20:37 PM »
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Doing any fueling testing at WOT is pointless if you can't get boost right.
Stop conflating two things. Work on the most obvious problem, which is lde. That is a major issue. Its causing limp for one thing. Not sure why you think it isn't. It can mean all sorts of things, including broken shit that can cause fueling to go wrong.
In any case, adaptation totally turns off at WOT anyway.
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« Last Edit: June 14, 2021, 05:23:36 PM by nyet »
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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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tadope
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« Reply #10 on: June 14, 2021, 05:44:04 PM »
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so basically I just happened to get two different tuners that tuned my boost request too high?
is that what you're saying?
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nyet
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« Reply #11 on: June 14, 2021, 05:55:22 PM »
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Your car is fundamentally broken if it can't make decent boost with 95% WGDC
Has nothing to do with tune.
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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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tadope
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« Reply #12 on: June 14, 2021, 06:05:37 PM »
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ok.
I was just hoping that something in the logs might have some clue as to the broken part.
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nyet
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« Reply #13 on: June 14, 2021, 06:12:04 PM »
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ps_w would be a good start.
wonky trims can indicate a boost leak.
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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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tadope
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« Reply #14 on: June 14, 2021, 06:27:10 PM »
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Ok i'll take a look at that.
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