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Author Topic: Help Tuning M3.8.2 1.8T 150HP  (Read 72300 times)
auamanu
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« Reply #30 on: June 12, 2013, 11:48:39 AM »

when i change the "Grundanpassungsfaktor 0" (0x7507) from 1 to 0,47... (New Injectros 470cc), which other changes require?

How can i finde "adjust latency" and "minimum injection time" ??

And what is the "Spannungskorrektur" (0x9563)?
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Novik
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« Reply #31 on: June 18, 2013, 06:01:36 AM »

Is some kind of KFLDHBN, or similar compressor performance map map in M3.8.x  ?
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prj
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« Reply #32 on: June 18, 2013, 06:45:07 AM »

Of course not, the ECU has no idea about pressure ratio or boost.
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20VTMK1
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« Reply #33 on: June 18, 2013, 12:27:18 PM »

It has factors based on beta testing though , right ? And these factors allow the higher boost levels when high load is requested ?

Am I on the right track ? I know which map it is , just not sure how to correctly label it . The ecu does have an altitude sensor tho
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overspeed
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« Reply #34 on: June 18, 2013, 02:44:45 PM »

You can run boost as high as you want... no "1,55Bar MAP limitation"...

altitude sensor just correct load to keep power constant.
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prj
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« Reply #35 on: June 19, 2013, 03:15:23 AM »

It has factors based on beta testing though , right ? And these factors allow the higher boost levels when high load is requested ?

Am I on the right track ? I know which map it is , just not sure how to correctly label it . The ecu does have an altitude sensor tho

Do you realize this ECU does not have the notion of boost at all?
It works purely based on MAF and LOAD.

It just requests load and controls N75 to reach target and that's it. There is no "boost" in this ECU.
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20VTMK1
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« Reply #36 on: June 19, 2013, 08:19:30 AM »

Do you realize this ECU does not have the notion of boost at all?
It works purely based on MAF and LOAD.

It just requests load and controls N75 to reach target and that's it. There is no "boost" in this ECU.

Sorry .. It was late and i minced my words. Yes , I understand that it has no concept of boost at all . It uses airflow and rpm (amongst others) to calculate load
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jamie16v
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« Reply #37 on: June 22, 2013, 07:02:52 AM »

to dig this one up, and excuse me for my lack of knowledge.
Does this mean you cannot take a maf scale map from a vr6 and paste it into the m3.8 ecu?.
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prj
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« Reply #38 on: June 23, 2013, 08:10:05 AM »

That won't work, at least I've always needed to tune this regardless.
Plus, if you are running enough power to max out the stock MAF most likely you are going to hit 255 load, which means you will need to underscale anyway.
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QuattroEd
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« Reply #39 on: June 23, 2013, 09:16:21 AM »

You can run boost as high as you want... no "1,55Bar MAP limitation"...

altitude sensor just correct load to keep power constant.

There is a max airflow Vs Rpm map however, this needs to be raised for aggressive stage 1 tuning.

I dont know what its called or where it is but I had Tapp add it to his Maestro 7 AEB maps as i was hitting limp for exceed Maf airflow (At 3-4000 rpm when the k03 is blowing hardest)

When I scale (using maestro 7) for the VR6 maf I just take my known logged maf readings for stock maf (At idle, max load and max rpm/ or the Maf limit 186g/sec) and re-scale with trial and error using start and end percentages to get the same g/sec in the new maf housing (with stock sensor)

Is the maf Map scaled to kg/Hr? if so I could give you some points to plot what I have scaled in Maestro 7. But thinking that you cant just plot the values between maps?

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fredrik_a
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« Reply #40 on: June 23, 2013, 10:46:50 AM »

There is a max airflow Vs Rpm map however, this needs to be raised for aggressive stage 1 tuning.

I dont know what its called or where it is...

Don't remeber the actual fuction/map-name but it is referred to as "ML-Schwelle für B_maxflr-Diagnose HFM/HLM" and one
reason for it I guess is to have a safety function when for instance the hose to the wastegate actuator falls off :-)

It's quite easy to spot just by visual apperance and is 6x6 if I remember correctly and if my memory serves me well it's
flow vs rpm and plate angle.


Could someone check adress in 018cg.bin for Grundanpassungskonstante - 06A37 right ?  

http://nefariousmotorsports.com/forum/index.php?action=dlattach;topic=1123.0;attach=6192



In this file, it's an 8 bit, 6x6 located at 8760.
« Last Edit: June 24, 2013, 02:55:34 AM by fredrik_a » Logged
checcoa3
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« Reply #41 on: July 07, 2013, 12:02:20 PM »

hello guys!

dusting this discussion.

I currently have my AGU with k04-022 and saab red injectors, 350cc.

to adapt everything I need to change the following curves right?

Grundanpassungsfaktor 0
Linearisierung der Heißfilmspannung

you can kindly help me?

thank you in advance.
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Giannis
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« Reply #42 on: July 08, 2013, 05:39:04 AM »

the first one yes the second no. And you must change some other maps too Smiley
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checcoa3
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« Reply #43 on: July 08, 2013, 02:58:29 PM »

thanks for the reply.

what would be the other to change?
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Giannis
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« Reply #44 on: July 09, 2013, 06:14:03 AM »

everything related to boost maps some ignition maps and some fuel tuning. Otherwise i see no reason to change into bigger turbo and injectors.  Wink
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