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Author Topic: Timing @ idle  (Read 12772 times)
vwaudiguy
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« on: March 16, 2015, 08:00:35 PM »

Is this straight from kfzw, or is there another map/ correction factor(s) that modify kfzw? It seems it changes also when the clutch is depressed..This is why I think there is another map.
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ddillenger
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« Reply #1 on: March 16, 2015, 08:43:48 PM »

Is this straight from kfzw, or is there another map/ correction factor(s) that modify kfzw? It seems it changes also when the clutch is depressed..This is why I think there is another map.

KFMRES
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nyet
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« Reply #2 on: March 16, 2015, 10:00:54 PM »

http://s4wiki.com/wiki/Idle_torque_reserve
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vwaudiguy
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« Reply #3 on: March 18, 2015, 08:55:23 PM »

Thanks for the info, guys. I looked in a few different bins for the values/axis of that map, and read what I could find in the FR. I still have some questions.

1.) What do the values in KFMRES represent?
2.) Is the ecu targeting a load value, and then gets it's ign timing from that?

Basically looking at KFZW I see high values in the 25-30% load range and 800-900 rpm range, and see 10-14 degrees of timing @ idle, and was wondering why.
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turdburglar44
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« Reply #4 on: March 19, 2015, 10:49:07 AM »

The way I think about it is this; the throttle plate is not precise enough to target such low loads by itself. So to remedy that the ecu is allowed to undershoot it's torque target by an amount up to the values in kfmres/kfmresk. If you set those maps to 0 idle timing = kfzw.
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vwaudiguy
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« Reply #5 on: March 19, 2015, 08:07:08 PM »

The way I think about it is this; the throttle plate is not precise enough to target such low loads by itself. So to remedy that the ecu is allowed to undershoot it's torque target by an amount up to the values in kfmres/kfmresk. If you set those maps to 0 idle timing = kfzw.

Thanks for the response. Do you know what the values in those maps refer to though?
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ddillenger
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« Reply #6 on: March 19, 2015, 08:33:55 PM »

Thanks for the response. Do you know what the values in those maps refer too though?

Percent?
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vwaudiguy
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« Reply #7 on: March 19, 2015, 08:39:18 PM »

Percent?

Of? I was a little surprised the FR didn't say a lot, or maybe I didn't understand because of the translation.
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Rick
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« Reply #8 on: March 20, 2015, 04:02:21 AM »

of torque
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vwaudiguy
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« Reply #9 on: March 20, 2015, 08:38:57 AM »

of torque

Thanks, Rick!
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ddillenger
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« Reply #10 on: March 20, 2015, 09:25:23 AM »

c'mon-the map is TORQUE RESERVES, and the value is percent-lol.

What else could it possibly be a percentage of?

Certainly not cheese.

Although.....

Cheese IS delicious.
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vwaudiguy
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« Reply #11 on: March 20, 2015, 09:34:26 AM »

I love it when you bust my balls, D! Smiley
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turdburglar44
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« Reply #12 on: March 20, 2015, 03:25:21 PM »

Idle cheese. Mmmmm
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ddillenger
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« Reply #13 on: March 20, 2015, 05:34:34 PM »

Just a bit of good natured ribbing Tongue

Thanks for not taking it the wrong way-lol.
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vwaudiguy
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« Reply #14 on: March 20, 2015, 05:39:39 PM »

Never!  Grin  But I still don't know where it get's it's timing values @ idle Smiley
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