digitalhippie
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« on: September 03, 2014, 08:19:16 AM »
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So I have this code on my 2001 Allroad 2.7T (551L base file):
16815 - Warm Up Catalyst; Bank 2
P0431 - 35-00 - Efficiency Below Threshold
Reading the S4 tuning wiki, it says you can numb the sensitivity and possibly get rid of the code using the following -
AHKATMN (0x18672)
AHKATMX (0x18673)
AHKATS (0x18674)
But not much is said about how to change these values. I'm assuming these are 8bit scalars (since they are not defined in my XDF), does anyone know the conversion factor? Should I be adjusting these values up or down to reduce sensitivity? What's a good increment to adjust them in?
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« Last Edit: September 03, 2014, 08:21:52 AM by digitalhippie »
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nyet
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« Reply #1 on: September 03, 2014, 08:50:30 AM »
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You can always look at one of the fully defined defs (551G, 551F etc.) for this information: http://files.s4wiki.com/defs/ |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. 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
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digitalhippie
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« Reply #2 on: September 03, 2014, 09:08:02 AM »
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Ok, that answers half of the question. Thanks. I didn't realize the addresses would be the same for those files.
Any suggestions on how to adjust these values? Up, down? Suggested increments?
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nyet
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« Reply #3 on: September 03, 2014, 09:11:43 AM »
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Ok, that answers half of the question. Thanks. I didn't realize the addresses would be the same for those files.
Not the addresses, those change. But the factor (and scalar bitwidth, etc.) is usually the same. |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. 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
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digitalhippie
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« Reply #4 on: September 03, 2014, 09:33:17 AM »
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Gotcha, thank you
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digitalhippie
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« Reply #5 on: September 03, 2014, 10:40:04 AM »
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I went ahead and cut the values in half... we'll see how that works
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ddillenger
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« Reply #6 on: September 03, 2014, 11:21:36 AM »
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You went the wrong way.
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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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digitalhippie
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« Reply #7 on: September 03, 2014, 11:22:28 AM »
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Dammit, figures... any suggested values to use?
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nyet
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« Reply #8 on: September 03, 2014, 11:24:10 AM »
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Wouldn't it make sense to decrease MIN but increase MAX?
Disclaimer: I have not adjusted any of these parameters in my file.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. 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
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digitalhippie
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« Reply #9 on: September 03, 2014, 11:27:53 AM »
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If MN is min and MX is max...
What are S and SB?
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ddillenger
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« Reply #10 on: September 03, 2014, 11:31:46 AM »
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If MN is min and MX is max...
What are S and SB?
The sums of each sensor in a stereo system. MX, S, SB=FF I have never lowered MN. |
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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!
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DDillenger84(at)gmail(dot)com
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digitalhippie
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« Reply #11 on: September 03, 2014, 11:33:30 AM »
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Ok, then I'll max out MX, S, SB
Thanks for your help, again. Sorry I'm such a newb to this.
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ddillenger
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« Reply #12 on: September 03, 2014, 11:37:40 AM »
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I suggest reading the FR. My info is my interpretation. It might not always be correct.
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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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digitalhippie
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« Reply #13 on: September 03, 2014, 11:38:56 AM »
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I definitely want to dig deeper and learn as much as I can, but right now it's just about getting the car running decent.
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digitalhippie
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« Reply #14 on: September 05, 2014, 12:24:43 PM »
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Looks like that worked... warm-up cat code has not returned.
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