silentbob
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« Reply #45 on: April 19, 2011, 10:38:26 PM »
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The adaption values are (wkra(x)).
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« Last Edit: September 13, 2011, 05:33:19 PM by silentbob »
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nyet
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« Reply #46 on: April 19, 2011, 11:43:23 PM »
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KRDWA
Knock control adaptation to differential current ZW map
0x1109D
Factor : 0.750000
thanks! It will appear in my next map pack release |
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janne
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« Reply #47 on: January 09, 2012, 09:04:59 AM »
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Hi.
I increase KFKEF maps and actually I see more timing retardation.
Then I take stock-10% and my cf's dops a lot.
So do I have to reduse it when I want to make it less sensitivy on knock?
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carlossus
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Leon Curpa Stg1+
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« Reply #48 on: January 09, 2012, 01:28:37 PM »
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You raise it to raise the detection threshold. In your case it could be that you are well into spark knock before it pulls timing so cannot retard fast enough, meaning many knock events are detected and force severe retardation. With a lower threshold, the first slight knock is detected and a minimal retard stops any further events. I would suggest caution. If the lower threshold has similar power, I'd stick with it.  |
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« Last Edit: January 09, 2012, 01:31:32 PM by carlossus »
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nyet
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« Reply #49 on: January 09, 2012, 01:29:56 PM »
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I would also avoid touching KFEF
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e_pacman
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« Reply #50 on: March 22, 2012, 03:07:37 PM »
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I have a question about knock voltages. I've done som very mild tuning, and logged the knock voltages just to see what's going on. It seems that cylinder 3 always is a bit higher than the rest. For example, if the others show 15 V, cylinder 3 says 19 V. Any ideas about this?
I don't know much about knock detection, but could it be just a sensor deviation? The result is the same when I use the stock file.
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nyet
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« Reply #51 on: March 22, 2012, 04:27:53 PM »
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On a V6, the highest voltages will be 2 and 5, because the two sensors are mounted nearest to the center of each bank. Another reason to NOT trust voltages; just monitor your CFs.
Are you looking at an inline 4? If not and you have a v6, then yes, something might be amiss.
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e_pacman
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« Reply #52 on: March 23, 2012, 12:05:02 AM »
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On a V6, the highest voltages will be 2 and 5, because the two sensors are mounted nearest to the center of each bank. Another reason to NOT trust voltages; just monitor your CFs.
Are you looking at an inline 4? If not and you have a v6, then yes, something might be amiss.
Yes, this is an inline 4. Sorry, what is CF?  |
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s5fourdoor
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« Reply #53 on: March 23, 2012, 02:13:49 AM »
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I have a question about knock voltages. I've done som very mild tuning, and logged the knock voltages just to see what's going on. It seems that cylinder 3 always is a bit higher than the rest. For example, if the others show 15 V, cylinder 3 says 19 V. Any ideas about this?
I don't know much about knock detection, but could it be just a sensor deviation? The result is the same when I use the stock file.
when did you last do your spark plugs and / or coil packs? |
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e_pacman
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« Reply #54 on: March 23, 2012, 03:52:33 AM »
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when did you last do your spark plugs and / or coil packs?
I havn't owned the car for very long, but it has been serviced according to the manual. Coming up on 100.000 km now, and I think the plugs where replaced at maybe 60.000. I don't think anything has been done to the coil packs. |
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nyet
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« Reply #55 on: March 26, 2012, 10:03:24 AM »
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Yes, this is an inline 4. Sorry, what is CF? Sorry, old (pre FR) term. KR ignition retard |
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julex
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« Reply #56 on: March 26, 2012, 10:08:43 AM »
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CF - correction factor which is how many degrees of ignition is engine pulling out of requested value.
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britishturbo
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« Reply #57 on: January 23, 2013, 11:16:08 AM »
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So I'm going to bump this old thread as I've been playing with the knock control quite a lot.
I'm currently running with the KFKEF tables all raised by 20% from stock.
I have disabled the knock adaption.
I have KRDWA set to 1.5
I'm also limiting the knock that can be pulled using KRMXM - it starts at -8.25 and tapers down as rpms rise.
Car is running very smooth and is making great power.
I find that by default the ecu pulls way too much timing and for way too long.
Anyone else have any other knock tuning methods that haven't been talked about here:?
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nyet
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« Reply #58 on: January 23, 2013, 11:19:18 AM »
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I wouldn't numb the knock recognition w/o detcans...
I tweaked hysteresis a bit on my tunes but not much else.
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prj
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« Reply #59 on: January 23, 2013, 11:20:09 AM »
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Car is running very smooth and is making great power. They all do, just before they melt the engine. Every engine will make the most power with some knock, it just won't live very long. I find that by default the ecu pulls way too much timing and for way too long. And you have verified this using headphones on a load bearing dyno? |
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