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Author Topic: Nefmoto community project: Stage1 1.8t ME7.5 A4 (8E0909518AK-0003)  (Read 290809 times)
ddillenger
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« Reply #75 on: October 09, 2014, 06:51:52 PM »

Start enrichment at say, 70% pedal position and ramp towards 100%?

Richest at peak load. You want AFR to decrease as boost increases. Sort of inverse. Don't go too rich too soon. It might not matter on a K03, but that can hurt spool.
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nyet
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« Reply #76 on: October 09, 2014, 07:11:29 PM »

Start enrichment at say, 70% pedal position and ramp towards 100%?

on the rpm axis.

Agreed, if you do it on the pedal axis you'll get terrible gas mileage.

Also, doing it via pedal input doesn't even remotely compensate for time based smoothing Tongue
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thelastleroy
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« Reply #77 on: October 09, 2014, 07:46:27 PM »

I'm not sure if this is what you mean.... let me know.
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nyet
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« Reply #78 on: October 09, 2014, 07:55:27 PM »

Definitely not.

you don't want to add any fuel anywhere except for last column.
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ddillenger
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« Reply #79 on: October 09, 2014, 08:07:34 PM »

Disagree with nye. 90 percent should request enrichment. Just not the same as 100 percent, and not as early.
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nyet
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« Reply #80 on: October 09, 2014, 08:08:51 PM »

works for me, but enriching in 70% makes no sense Wink
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aef
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« Reply #81 on: October 10, 2014, 01:23:42 AM »

Here is my 1.8t Lamfa

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thelastleroy
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« Reply #82 on: October 10, 2014, 02:52:58 AM »

Here is my 1.8t Lamfa



You're a prince!

Now I understand what you guys meant  Embarrassed Before I had only 1 lambda and .85 lambda, the latter was the ENTIRE last two columns at any rpm above 1000. What I needed to try is smooth out the transition between 1 lambda and maximum enrichment as rpm increases, still in these two rows only. We'll see how it goes!
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thelastleroy
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« Reply #83 on: October 10, 2014, 02:56:08 AM »

Agreed. LAMFA first, BUT:

From comparing lamfaw and lamfaws, TLAFA seems to be zeroed properly.

ZK is getting there. We aren't that far off as far as LAMFA goes... i think it would be safe to start addressing BTS onset as well, even now.

Looks like IDC is maxed as soon as BTS comes in, but we're still close to requested, so we aren't entirely f'd. Might want to tone down req load near redline anyway.

nyet: You think i should ramp down ldrxn a bit more towards redline?
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SB_GLI
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« Reply #84 on: October 10, 2014, 04:37:15 AM »

You're a prince!

Now I understand what you guys meant  Embarrassed Before I had only 1 lambda and .85 lambda, the latter was the ENTIRE last two columns at any rpm above 1000. What I needed to try is smooth out the transition between 1 lambda and maximum enrichment as rpm increases, still in these two rows only. We'll see how it goes!

I think you will end up needing something like this in order to get lamdba where you want it at .85 with those time delays active
1k .80
3k .76
4k .79
5k .83
6k .84
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nyet
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« Reply #85 on: October 10, 2014, 09:23:48 AM »

What I needed to try is smooth out the transition between 1 lambda and maximum enrichment as rpm increases, still in these two rows only. We'll see how it goes!

Actually, with stock ZK you don't really Smiley It will do the smoothing for you ... but the concept is correct. In any case, you may actually HAVE to make it a cliff if you keep ZK stock.

nyet: You think i should ramp down ldrxn a bit more towards redline?

Let's hold off on that until we see what IDC looks like w/o BTS
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ME7.1 tuning guide (READ FIRST)
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Please 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 experience.
thelastleroy
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« Reply #86 on: October 10, 2014, 06:00:48 PM »

Log from this morning, with aef's lambda values and a *very* slight ldrxn decrease through redline (sorry nyet, already logged before I caught your post). Let me know what you think
« Last Edit: October 10, 2014, 06:05:26 PM by thelastleroy » Logged
ddillenger
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« Reply #87 on: October 10, 2014, 06:15:26 PM »

I want to see an AFR of 12.5 at 2500rpm. I think LAMFA is coming in too late. If that doesn't knock EGT's down a bit, then it's time to raise the threshold for BTS enrichment.
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thelastleroy
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« Reply #88 on: October 10, 2014, 06:49:29 PM »

I guess I need to alter zklamfaw to allow faster onset of lamfa fuel map? Is this parameter a map or scalar? I saw you posted the address a few pages back.

Or maybe just try to cludge the numbers in the lamfa table and log until it works? I'm starting to think I should run the stock file for this road trip if ive got lean burn issues
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ddillenger
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« Reply #89 on: October 10, 2014, 06:58:34 PM »

No. What you have there is reasonably safe, just not ideal.

Nye will chime in.
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