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Author Topic: Boost help  (Read 22425 times)
wannabeS4
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« Reply #15 on: September 21, 2011, 04:16:20 PM »

Any ideas?

I just checked for boost leaks and couldnt find one.
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nyet
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« Reply #16 on: September 21, 2011, 04:35:36 PM »

Post up your .csv; I'll take a peek time permitting.
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wannabeS4
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« Reply #17 on: September 21, 2011, 04:48:37 PM »

Here is my csv file
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nyet
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« Reply #18 on: September 21, 2011, 04:59:44 PM »

Can you get clean logs?

2500 rpm ALL THE WAY to redline.

Your first run shows a boatload of boost oscillations (your PID tuning is a disaster) but your
run ends early, so I can't tell what it would have done up top.

Your second run starts super late, then you have positive deviation limp (100 wgdc, but really short on boost).


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ME7.1 tuning guide
ECUx Plot
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Trim heatmap tool

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 ex
wannabeS4
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« Reply #19 on: September 21, 2011, 05:12:52 PM »

That is one run, I'm getting massive throttle cut around 4500 rpm. I will go and do some more logging when I get a chance.
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NOTORIOUS VR
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« Reply #20 on: September 21, 2011, 06:02:14 PM »

load the bae file back in and see if the problems go away
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SCHNELL ENGINEERING BLOG ·  STANDALONE ECUS · TUNING · DYNO · WIRING · PARTS · VEMS
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nyet
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« Reply #21 on: September 21, 2011, 09:22:23 PM »

I'm guessing your WG linearization is totally screwed, unless your PID D term isn't stock.

you are showing MASSIVE overshoot. Need to pull a lot more WG right before req meets actual.
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ME7.1 tuning guide
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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 ex
judeisnotobscure
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« Reply #22 on: September 22, 2011, 10:11:58 AM »

definately looks like the file/n75 map not giving correct duty.. goes very rich... have you adjusted the fueling tables or are they still stock like i left them?
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wannabeS4
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« Reply #23 on: September 22, 2011, 10:37:56 AM »

I changed the kfldimx table in the middle because on a previous revision I was meeting requested boost. I'm hopefully going to have some time today to flash a new file and get some logging done.
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wannabeS4
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« Reply #24 on: September 23, 2011, 12:30:52 PM »

OK so I replaced kfldimx table with the original one from jude's file and it got rid of the overboost and throttle cut. I also found out that my turbos just cant flow more than 13psi up top. That gave me a hard limp mode during logging.
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nyet
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« Reply #25 on: September 23, 2011, 12:33:38 PM »

K03s?
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

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 ex
wannabeS4
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« Reply #26 on: September 23, 2011, 12:34:27 PM »

unfortunately  Cry
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wannabeS4
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« Reply #27 on: October 19, 2011, 02:33:07 AM »

So I am still trying to figure out why my boost tapers up instead of down following the ldrxn table.
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Rick
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« Reply #28 on: October 19, 2011, 03:25:22 AM »

Boost and Load are related, but it isn't a linear relationship due to corrections.  What is load doing? 

Rick
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wannabeS4
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« Reply #29 on: October 19, 2011, 09:43:31 AM »

Load is decreasing, it goes down from 200 to 140 on the log graph.
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