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vwaudiguy
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« on: January 06, 2016, 02:53:40 PM »
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I understand these variables are essentially the "fuel trim" of ignition timing history, and are divided into 5 blocks of RPM ranges. I couldn't find any other info on here, online, or in the wiki. I did search through the FR and the Alfa english FR, to get the details I know but I was wondering.... 1. How long does it take for these values to zero out once tripped assuming no additional knock events have happened? 2. What is the codeword to remove this function? 3. What is the max amount of degrees this function can remove, or what are the maps names that control the max threshold? Happy New Year everyone!  |
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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dream3R
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« Reply #1 on: January 07, 2016, 07:23:51 PM »
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I think the maps in the calibrations set those if I remember right
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vwaudiguy
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« Reply #2 on: January 07, 2016, 07:29:53 PM »
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I think the maps in the calibrations set those if I remember right
I'm almost 100% sure they do. Going to look through the FR's again tonight. I'm pretty sure I had 3-4 codewords narrowed down as well as disabling the function. Might just be nice to not have to constantly clear the codes to bring them back to 0 when live tuning.. |
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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dream3R
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« Reply #3 on: January 07, 2016, 07:43:20 PM »
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You're call iirc the function was a bitch to disassemblewith no FR lol. Can't remember seeing anything of merit hardcoded
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« Last Edit: January 07, 2016, 07:44:54 PM by dream3R »
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vwaudiguy
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« Reply #4 on: January 09, 2016, 01:21:41 PM »
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Found some info. Still looking for the codeword to disable the function if it exists.
The RAM-area wkrdya is subdivided into 5 engine speed ranges stkrnx.
stkrnx = 0 1 2 3 4
+-----------+-----------+-----------+-----------+-----------+
wkrdya | | | | | |
+-----------+-----------+-----------+-----------+-----------+
engine speed base points KRAN1 KRAN2 KRAN3 KRAN4
<---------+ ---------> nmot (rpm)
hysteresis KRANH
pg 667 Alfa FR
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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dream3R
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« Reply #5 on: January 09, 2016, 01:32:45 PM »
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in the code I've seen it's only skipped if bits are set no CW.
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vwaudiguy
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« Reply #6 on: January 09, 2016, 01:41:16 PM »
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in the code I've seen it's only skipped if bits are set no CW.
And what code would that be? |
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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dream3R
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« Reply #7 on: January 09, 2016, 01:44:38 PM »
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KRDY in Volvo 2005
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dream3R
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« Reply #8 on: January 09, 2016, 01:47:00 PM »
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Here's what it looks like the bypass points are all bits.
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vwaudiguy
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« Reply #9 on: January 09, 2016, 01:52:36 PM »
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Man, I really need to start learning to disassemble. SO to know for sure it needs to be disassembled, or I suppose it's safe to assume it would be like Volvo. Interesting info, thanks. |
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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dream3R
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« Reply #10 on: January 09, 2016, 01:55:07 PM »
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Man, I really need to start learning to disassemble. SO to know for sure it needs to be disassembled, or I suppose it's safe to assume it would be like Volvo. Interesting info, thanks. There may well be a code word in your file, it changes even in VAG files a lot, little things mostly, sometimes a variable, sometimes a limiter, sometimes a CW. |
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vwaudiguy
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« Reply #11 on: January 09, 2016, 02:27:04 PM »
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Right now I'm concerned with the M box S4 file, as it's my daily. Shirley someone must have disassembled that old maid by now.
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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dream3R
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« Reply #12 on: January 09, 2016, 05:05:19 PM »
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Yep they sure have good luck in prising their IDB from them tho lol. I checked my
Mbox does have that part defined and I just spent 12 hours in IDA so called it a day
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dream3R
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« Reply #13 on: January 09, 2016, 05:06:55 PM »
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Yep they sure have good luck in prising their IDB from them tho lol. I checked my
Mbox does have that part defined and I just spent 12 hours in IDA so called it a day
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dream3R
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« Reply #14 on: January 09, 2016, 07:05:01 PM »
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Found some info. Still looking for the codeword to disable the function if it exists.
The RAM-area wkrdya is subdivided into 5 engine speed ranges stkrnx.
stkrnx = 0 1 2 3 4
+-----------+-----------+-----------+-----------+-----------+
wkrdya | | | | | |
+-----------+-----------+-----------+-----------+-----------+
engine speed base points KRAN1 KRAN2 KRAN3 KRAN4
<---------+ ---------> nmot (rpm)
hysteresis KRANH
pg 667 Alfa FR
Can't 100% rely on the alfa FR you need to look at the mbox code. |
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