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Author Topic: ARMD - antirukelfunktion and timing oscillations  (Read 48452 times)
Snow Trooper
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« Reply #45 on: May 06, 2012, 10:44:05 PM »

What in your opinion is the best method for killing it.  If I understand correctly we are killing numerous other things also.

I will admit I feel foggy on this subject.  I do indeed experience the bouncing timing at times.
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silentbob
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« Reply #46 on: May 06, 2012, 10:55:13 PM »

The simplest total kill is probably to set TMAR to something really, really big - AR only enabled if engine temp is higher

RPM based kill can be done via:
 
raising NARLLA (based on gear) - AR only enabled if RPM is higher

or

raising NARASTG and/or lowering NARAO - AR only enabled for RPMs between this range

however, this also kills dashpot AR, which you probably dont want to do. I think the best quick and dirty kill (until i figure out otherwise) is to ff KFDMDARO

the question remains though, should ARMD be disabled? I got more power when I did, but what is the tradeoff?


The tradeoff is that the car will drive very bumpy if you turn off all the driveability functions. It's really anoying especially in city traffic.
Calibrated right it will not influence power in any way. Even "minor changes" like different engine/drivetrain mounts can have the effect that this has to be changed. That's also the main reason why the RS4 values are so different  Wink
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Snow Trooper
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« Reply #47 on: May 06, 2012, 11:06:56 PM »

Thanks bob!  So in essence you agree that the only real draw backs are drivability and such?  For a kill/drag file people can do without?
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silentbob
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« Reply #48 on: May 06, 2012, 11:24:03 PM »

ARMD, SAWE, DASHPOD and LSD are the factors to influence the driveability/responsiveness/smoothness of the car.
If you need it only for drag racing you can turn them all off.
Just try what works better for you.
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nyet
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« Reply #49 on: May 06, 2012, 11:27:36 PM »

What in your opinion is the best method for killing it.

For now, just 0xFFFF all of KFDMDARO

That will leave dashpot ARMD intact.
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nyet
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« Reply #50 on: May 07, 2012, 10:00:10 AM »

For now, just 0xFFFF all of KFDMDARO

That will leave dashpot ARMD intact.

In theory, MAYBE only the last row in KFMDMDARO, but i haven't tested it. need to log mkar_w
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Vitruvian Engineering
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« Reply #51 on: May 07, 2012, 07:33:40 PM »

Just thinking out loud here, but do you think that this ARMD might possibly cause timing oscillations even at low load/RPM?  For example, trying to track down a different issue, I made a file where the only things I switched from stock were my MAF/Fuel injector stuff, and though my parking lot behavior is by no means terrible, there is still some slight juttering (even with stock KFMIRL/IOP, etc).  I've got harder stern mounts all around, do you think it's possible that ARMD oscillations affect that low range at all?

EDIT:  Sorry, this is jibberjive. I forgot to sign out of this account.
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nyet
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« Reply #52 on: May 07, 2012, 08:06:25 PM »

ARMD is supposed to smooth out those felt vibrations at low rpm, so yes, it absolutely could be active. In fact, it is designed to ALWAYS be active; there are very few situations where it is disabled.

However, if not properly calibrated, I could see that ARMD might make felt vibration worse.

In my case, I cannot feel the vibrations; they only show up in logs and rob the car of HP at wot.
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« Reply #53 on: May 08, 2012, 01:40:47 PM »

Same as you nye.
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masterj
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« Reply #54 on: May 08, 2012, 03:17:07 PM »

ARMD, SAWE, DASHPOD and LSD are the factors to influence the driveability/responsiveness/smoothness of the car.
If you need it only for drag racing you can turn them all off.
Just try what works better for you.

silentbob, what are these functions SAWE, LSD, DASHPOD? I couldn't find these functions in my funktiosnrahmen file....

ARMD I have disabled, but want to turn off all these other functions...

P.S> Those are all "comfort" functions? Are there any more that could intervene with torque limited by kfmirl (ldrxn) and kfmiop? I'm looking for a way to simulate drive by cable behaviour...
« Last Edit: May 08, 2012, 03:33:22 PM by masterj » Logged

nyet
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« Reply #55 on: May 08, 2012, 03:56:56 PM »

Ok; mkar is what i thought it was (% torque at transmission), so to disable ARMD on wot, you only have to modify the last line of KFDMDARO... 0xffff is for sure kill, but i'm betting 0x8000 (50.00) is fine, since I believe thats how the RS4 disables ARMD at high torque/low gear.

So my DARO currently looks like this (rs4 and 50.00 on last row)

Code:
1              2               3               4               5              6
2.0004 2.0004 2.0004 20.0012 20.0012 20.0012
1.0010 1.0010 1.0010 1.0010 1.0010 1.0010
1.0010 1.0010 1.0010 1.5106 1.5106 1.5106
50.0000 2.0004 2.0004 2.0004 2.0004 2.0004
50.0000 3.0014 3.0014 3.0014 3.0014 3.0014
50.0000 3.0014 3.0014 3.0014 3.0014 3.0014
50.0000 4.5013 4.5013 4.5013 4.5013 4.5013
50.0000 50.0000 50.0000 50.0000 50.0000 50.0000

I haven't tested it on the dyno yet (low load) but that should work.

Also, have copied the RS4 KIFZGHG

Code:
0               1              2               3             4               5              6               7
58.4846 58.4846 15.8086 8.2383 5.1953 3.7109 2.4492 35.9962
« Last Edit: May 08, 2012, 03:58:56 PM by nyet » Logged

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« Reply #56 on: May 08, 2012, 04:43:42 PM »

What factor are you using?  It doesn't really matter cause I just ffed the thing but it was annoying looking at it with weird values.

Did you notice most stuff around it is undefined and ffed?  Wonder what is there ...
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nyet
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« Reply #57 on: May 08, 2012, 05:38:59 PM »

What factor are you using?
hmm? not sure what you are referring to, sir.
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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.
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« Reply #58 on: May 08, 2012, 06:28:30 PM »

what formulas are you using for these tables?  i'm not seeing the values you posted at all... any idea what these axis represent?
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nyet
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« Reply #59 on: May 08, 2012, 06:53:20 PM »

I didn't put in the mkar axis, only the gear axis.

I'm assuming you can figure out the axis data properly on your own (until i post a mappack)

I use the f-box rs4 as a reference for the values, and the g-box s4 damos for a map reference.
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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.
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