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Author Topic: Nefmoto community project: Stage1 1.8t ME7.5 A4 (8E0909518AK-0003)  (Read 273265 times)
snuff
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« Reply #690 on: June 29, 2018, 01:40:53 PM »

Hi everyone, I was logging my car and I noticed unusual "spikes" in the boost pressure .. In my point of view it happens because when I quit pushing gas and the throttle valve suddenly closes it it the pressure of air which is than let out through an blow-off valve.. Can someone confirm it is OK? Or do I have somehow faulty blow-off valve which doesn't respond as quickly as it should? Thanks.. (red line is desired boost and yellow actual.)
« Last Edit: June 29, 2018, 02:04:16 PM by snuff » Logged
joshk326
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« Reply #691 on: June 29, 2018, 02:06:50 PM »

I have a 2003 b6 Audi A4 1.8t and if I were to flash this right on my ecu without making any changes for now would it work?


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2003 Audi A4 1.8T
nyet
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« Reply #692 on: June 29, 2018, 02:28:33 PM »

Hi everyone, I was logging my car and I noticed unusual "spikes" in the boost pressure .. In my point of view it happens because when I quit pushing gas and the throttle valve suddenly closes it it the pressure of air which is than let out through an blow-off valve.. Can someone confirm it is OK? Or do I have somehow faulty blow-off valve which doesn't respond as quickly as it should? Thanks.. (red line is desired boost and yellow actual.)

That does not look good. Definitely have them checked out.
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ME7.1 tuning guide (READ FIRST)
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vwaudiguy
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« Reply #693 on: June 29, 2018, 08:38:04 PM »

Hi everyone, I was logging my car and I noticed unusual "spikes" in the boost pressure .. In my point of view it happens because when I quit pushing gas and the throttle valve suddenly closes it it the pressure of air which is than let out through an blow-off valve.. Can someone confirm it is OK? Or do I have somehow faulty blow-off valve which doesn't respond as quickly as it should? Thanks.. (red line is desired boost and yellow actual.)

Can you post the log?
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snuff
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« Reply #694 on: June 29, 2018, 11:53:53 PM »

thanks log are here..

I found out that on my car was modified software..LDRXN and LDRXNZK and KFBLTS were changed.. The log from 173615.csv is from that software.

After that I changed LDRXN and LDRXNZK to factory values (log 202134) and logged again.
« Last Edit: July 03, 2018, 09:11:33 AM by snuff » Logged
BlackT
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« Reply #695 on: March 12, 2019, 05:47:56 AM »

On this stock ECU at first post the TABGBTS is 850, but as I can see older ECU-s  on passat ,TT etc. (starting index 4B0 or 06A) have TABGBTS 400-500. Why is it so?
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prj
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« Reply #696 on: March 13, 2019, 11:44:08 AM »

On this stock ECU at first post the TABGBTS is 850, but as I can see older ECU-s  on passat ,TT etc. (starting index 4B0 or 06A) have TABGBTS 400-500. Why is it so?
Because they ran all the time on the BTS map.
As focus shifted away from engine/turbocharger longevity and more towards minimum consumption it was made so that the car runs lambda 1 all the time unless absolutely neccessary to enrich for component protection. This results in higher EGT's through the lifecycle of the engine, but less fuel consumption.

Apart from WOT where lambda was regulated to lean best torque (0.9) to get the best response, especially off-boost.
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« Reply #697 on: March 15, 2019, 12:34:47 AM »

Thank you,
One more thing, B6 have different fuel sistem from B5.
Soo does B6 have some maps about fuels injection/and manifold pressure?
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316LV
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« Reply #698 on: March 17, 2019, 08:58:04 AM »

Thank you,
One more thing, B6 have different fuel sistem from B5.
Soo does B6 have some maps about fuels injection/and manifold pressure?

Yes. FRLFSDP.

See this thread: http://nefariousmotorsports.com/forum/index.php?topic=460.0
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snuff
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« Reply #699 on: May 14, 2019, 11:36:20 PM »

That does not look good. Definitely have them checked out.

Hi, after some time, these spikes were there because of DV was not functional.
Anyway thanks to this forum I managed to modify my AWT 1.8T without problems so thank you guys, a lot of amazing info is there.
« Last Edit: December 18, 2019, 12:26:47 AM by snuff » Logged
snuff
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« Reply #700 on: June 04, 2019, 09:18:55 AM »

Hi, could please anyone check my log? I'm trying to calculate IDC (last row in attached document) and it looks like, my injectors are going on 98 percent of its capacity? Am am calculating it right please? Thanks..

I calculate it as IPW * RPM / 1200
« Last Edit: June 04, 2019, 09:27:30 AM by snuff » Logged
nyet
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« Reply #701 on: June 04, 2019, 10:10:52 AM »

Hi, could please anyone check my log? I'm trying to calculate IDC (last row in attached document) and it looks like, my injectors are going on 98 percent of its capacity? Am am calculating it right please? Thanks..

I calculate it as IPW * RPM / 1200

ECUxPlot will do this for you.

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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

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.
nyet
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« Reply #702 on: June 04, 2019, 10:12:19 AM »

And your WGDC is maxed too.

Not good.
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

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.
Blazius
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« Reply #703 on: June 04, 2019, 10:14:00 AM »

Hi, could please anyone check my log? I'm trying to calculate IDC (last row in attached document) and it looks like, my injectors are going on 98 percent of its capacity? Am am calculating it right please? Thanks..

I calculate it as IPW * RPM / 1200

You dont need to calculate it , as EcuXplot knows ,you are running 100+ idc. AFR maxes at 10.7 , and your requested is still going below 10, even 9.9 gotta fix that + what nyet said.

Also whats wrong with the MAF reading off throttle , do you have surge or something ?
« Last Edit: June 04, 2019, 10:15:49 AM by Blazius » Logged
snuff
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« Reply #704 on: June 05, 2019, 01:44:35 AM »

And your WGDC is maxed too.

Not good.

Yes I know, thank you. That is not map I am running on..It was done only for testing purposes..I need to use downpipe and I think my wgdc will be alright than.

MAF off the throttle was bacause of mailfuntional DV.
What I'm worried about is that my turbo lasts too long to spool until desired boost pressure. It can reach desired boost only in around 3500 rpm... Too late. :/
« Last Edit: December 18, 2019, 12:28:13 AM by snuff » Logged
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