q_dubz
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« on: December 14, 2015, 11:37:47 AM »
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Good day all, I really can not figure this out. I'm trying to get this tune all straight but i'm lost on where to look next. Under WOT the actual load suddenly drops once MAF readings exceed 420g/s which drops IDC and thus i run super lean. Now that specific point may be a coincidence but im not sure. And before someone says it i'll address the super rich a/f actual not meeting requested later. Here's the log: https://drive.google.com/file/d/0B4w-boswX0J3ZVpGYUVhSEVEU28/view?usp=sharing3rd gear portion of the pull starts at row 438 |
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dream3R
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« Reply #1 on: December 14, 2015, 12:35:21 PM »
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Spooky.......
Dillinger might know I assume you are not exceeding KFMLDMX?
Edit, I think you are?
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« Last Edit: December 14, 2015, 12:46:23 PM by dream3R »
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q_dubz
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« Reply #2 on: December 14, 2015, 01:30:53 PM »
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Wouldn't I throw a MAF too high code for that?
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dream3R
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« Reply #3 on: December 14, 2015, 01:54:52 PM »
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Depends on the code, dual maf?? idk
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q_dubz
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« Reply #4 on: December 14, 2015, 02:06:56 PM »
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Single MAF b7 s4
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ddillenger
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« Reply #5 on: December 14, 2015, 02:20:31 PM »
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The values in MLDMX need to be adjusted so that they are ~30 percent higher than anything you will see in normal operation. As it is, it appears as though you are exceeding this, at which point it changes to calculated values. As you are dumb (like me) and haven't bothered to properly calibrate the rest of your airflow maps, it's fucked.  |
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« Last Edit: December 14, 2015, 05:56:21 PM by ddillenger »
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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!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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dream3R
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« Reply #6 on: December 14, 2015, 04:51:01 PM »
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The values in DMX need to be adjusted so that they are ~30 percent higher than anything you will see in normal operation. As it is, it appears as though you are exceeding this, at which point it changes to calculated values. As you are dumb (like me) and haven't bothered to properly calibrate the rest of your airflow maps, it's fucked. Lol |
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q_dubz
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« Reply #7 on: December 14, 2015, 08:42:36 PM »
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sure enough...that was it! Thanks guys. So much learning to do. Time to tackle the lambda issue.
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dream3R
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« Reply #8 on: December 14, 2015, 09:14:27 PM »
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sure enough...that was it! Thanks guys. So much learning to do. Time to tackle the lambda issue.
No probs. |
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ddillenger
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« Reply #9 on: December 14, 2015, 09:25:48 PM »
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sure enough...that was it! Thanks guys. So much learning to do. Time to tackle the lambda issue.
It is time to tackle KFMSNWDK and KFWDKMSN, so that in the event of a MAF failure you don't run lean and blow the car up. The only reason this was obvious to either of us is because I just went through this the other day. |
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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!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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q_dubz
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« Reply #10 on: December 14, 2015, 09:46:16 PM »
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Oh wow...guess i got lucky with my post today then! That's very sound advise. THANK YOU.
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dream3R
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« Reply #11 on: December 14, 2015, 09:50:40 PM »
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Oh wow...guess i got lucky with my post today then! That's very sound advise. THANK YOU.
That's why I said spooky! |
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k0mpresd
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« Reply #12 on: December 14, 2015, 10:03:07 PM »
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Wouldn't I throw a MAF too high code for that?
when you max sensor voltage it will throw a too high fault. |
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dream3R
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« Reply #13 on: December 14, 2015, 10:17:21 PM »
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when you max sensor voltage it will throw a too high fault.
In ealier code it also set bit in DLDR iirc this car wasn't doing that. Well Daz's wasn't which gives me an idea on his file lol |
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q_dubz
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« Reply #14 on: January 08, 2016, 11:49:39 AM »
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ok so limit has been raised and now i'm throwing the damn implausible maf signal but not dropping load/ running super lean. It does however change the drivability of the car. Below is what i THINK the culprit is:  |
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