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Author Topic: anti judder/ARMD  (Read 24866 times)
prj
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« Reply #30 on: July 16, 2016, 01:56:03 AM »

Exactly, on a bone stock car you will never have ARMD intervention on a smooth road on WOT.

It's a very sensitive function. Hell, things like a lighter flywheel can affect it and make it trigger in some cases.
The thresholds should be adjusted on modified cars, so that it stays OFF when WOT.

Where ARMD is doing something is for example when you have a stiff car with stiff mounts etc and you are say in 1st or 2nd gear at low rpm just rolling.
Now if you go on the throttle, and then back off the throttle sharply the entire car will rock back and forth. With ARMD it will catch that rocking and kill the resonance instantly. If you have softer mounts it is not as noticeable.
It is meant to counter drivetrain resonance. In higher gears it is mostly unnecessary if you have good traction. It sure as hell should never trigger there - if it does it is set up wrong.
If it affects your WOT power - it is set up wrong etc.

As I said before you can say the same thing about knock control. If it was calibrated wrong for the hardware and would be randomly pulling timing then turning it off you would also make gains. Does not mean the function is useless. But that seems to be the logic of some people here "I don't understand what it does/how it works - turn it off".
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k0mpresd
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« Reply #31 on: July 16, 2016, 04:39:23 PM »

to update this, tested CWARMD = 3 (stock) and CWARMD = 0.

according to customer, with = 0, ski launched harder with more lower end power. said lost a bit of top end.
the top end may or may not be an accurate account i think. only 1mph difference in top speed so maybe just a fluke.

seems disable had positive gain, at least in parts of the power band.
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nyet
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« Reply #32 on: July 16, 2016, 04:41:47 PM »

Why would you trust that sketchy evidence considring you can just log B_armd
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ME7.1 tuning guide
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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
k0mpresd
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« Reply #33 on: July 16, 2016, 04:42:18 PM »

Why would you trust that sketchy evidence considring you can just log B_armd

im testing this on a seadoo, me17.8.5.
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nubcake
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« Reply #34 on: July 16, 2016, 04:53:56 PM »

Why would you trust that sketchy evidence considring you can just log B_armd

"B_ar" in ME7/MED9, should be the same for later ECUs?
Just a nitpick. Wink
« Last Edit: July 16, 2016, 04:56:30 PM by nubcake » Logged
prj
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« Reply #35 on: July 18, 2016, 04:41:55 AM »

to update this, tested CWARMD = 3 (stock) and CWARMD = 0.

according to customer, with = 0, ski launched harder with more lower end power. said lost a bit of top end.
the top end may or may not be an accurate account i think. only 1mph difference in top speed so maybe just a fluke.

seems disable had positive gain, at least in parts of the power band.

I love the selective reading done here.
We know 50% of what that customer said is bullshit. But you choose to believe the other 50% like it's pure gold. Because it fits with what you want to believe.

The amount of fail is unbelievable.
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k0mpresd
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« Reply #36 on: July 18, 2016, 09:26:20 AM »

I love the selective reading done here.
We know 50% of what that customer said is bullshit. But you choose to believe the other 50% like it's pure gold. Because it fits with what you want to believe.

The amount of fail is unbelievable.

it is not selective reading. i still need to test for myself (ski is 9hrs from my current living location). i have also given the info to others to test as well.
the person commented that it was "noticeably quicker" with that file during launch. tests were back to back, on vs off.

i also dont believe the other half is bullshit vs pure gold. my ski is not always 100% consistent on top speed, even on back to back runs like that. 1mph difference does happen often.
« Last Edit: July 18, 2016, 09:33:26 AM by k0mpresd » Logged
prj
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« Reply #37 on: July 19, 2016, 08:58:17 AM »

Either way, it would be nice to keep the "it feels like" crap off of the board.
There's enough forums where everything is done off of that and we know how that goes.

If you do not have hard data then there is no point drawing any conclusions.
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k0mpresd
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« Reply #38 on: July 19, 2016, 09:12:07 AM »

Either way, it would be nice to keep the "it feels like" crap off of the board.
There's enough forums where everything is done off of that and we know how that goes.

If you do not have hard data then there is no point drawing any conclusions.

i understand your point.
i would love hard data. there is just no logger available.
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overspeed
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« Reply #39 on: July 21, 2016, 02:53:25 PM »

Uhm... So, if you change gear to use closed ratio you MUST deal with ARMD stuff... make MUCH sense
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S2evo1
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« Reply #40 on: July 21, 2016, 11:17:56 PM »

Look in a P 996 turbo file for an exampel.
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