IWay
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« on: February 01, 2021, 05:31:18 AM »
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Hello all,
I’ve got the 5120 Hack to work on 8N0906018H 0004, but still have the general questions below;
- What exactly are the ASM edits achieving, if we are scaling the required elements in the config, why are we needing to edit the code? Also if we are editing the code why is it not
possible to edit the 2560mBar limit to a greater value? Resolved see further down trail
- How do the VCDS edits work, is it just a report x 2 edit or something else? Resolved see further down trail
- 4Bar MAP sensor values, using the attached pdf I come out with; Resolved see further down trail
Min Pressure 50 Min Voltage 0.3
Max Pressure 400 Max Voltage 4.7
DSLGRAD = 79.54545 For 5120 Hack divide by 2 = 39.77273
DSLOFS = 26.13636 For 5120 Hack divide by 2 = 13.06818
Yet when using these values the car doesn’t go very well, they are clearly wrong.
How are the DSLGRAD / DSLOFS of 437.5 / 31.25 values arrived at using the below formulas and specification PDF?
DSLGRAD = (MAXPRESSURE - MINPRESSURE) / (MAXVOLTAGE - MINVOLTAGE) = xxx.x
DSLOFS = MAXPRESSURE - (DSLGRAD * MAXVOLTAGE) = xx.xxx
In the log & bin attached I’m limiting the boost via KFLDRL, while testing, which explains the squirmy boost profile.
Thanks
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« Last Edit: February 18, 2021, 02:01:47 AM by IWay »
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zamzu
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« Reply #1 on: February 01, 2021, 05:42:43 AM »
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You write here a formula, but cannot calculate?
You have your "." at wrong place, pressure is not 50 & 400
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« Last Edit: February 01, 2021, 05:55:29 AM by zamzu »
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IWay
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« Reply #2 on: February 01, 2021, 05:58:28 AM »
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Am I reading the PDF wrong?
Using values from PDF;
DSLGRAD = (400KPa – 50KPa) / (4.7V – 0.3V) = 79.54 5120 hack /2 = 39.77
DSLOFS = 400KPa - (79.54 * 4.7V) = 26.13 5120 hack /2 = 13.06
Even using mBar it still comes out different from the established working values?
Min Pressure 500 Min Voltage 0.3
Max Pressure 4000 Max Voltage 4.7
DSLGRAD = 795.4545455 For 5120 Hack divide by 2 = 397.7272727
DSLOFS = 261.3636364 For 5120 Hack divide by 2 = 130.6818182
How are people getting the below from the PDF?
Min Pressure 420 Min Voltage 0.4
Max Pressure 4100 Max Voltage 4.646
PS
Any thoughts on the other points?
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« Last Edit: February 01, 2021, 06:04:54 AM by IWay »
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zamzu
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« Reply #3 on: February 01, 2021, 06:12:54 AM »
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You use mBar and 0,5/4,5 volt
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IWay
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« Reply #4 on: February 01, 2021, 07:10:46 AM »
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Ahh,
I get it, you use the graph on the right hand side of the PDF not the table on the left, would have been easier if I could speak German (the whole thing would be easier if I could speak German).
Thanks
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zamzu
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« Reply #5 on: February 01, 2021, 07:38:58 AM »
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This is also covered in s4wiki in pure english.
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sonflasch
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« Reply #6 on: February 09, 2021, 11:30:28 PM »
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-> What exactly are the ASM edits achieving, if we are scaling the required elements in the config, why are we needing to edit the code? Also if we are editing the code why is it not
possible to edit the 2560mBar limit to a greater value?
= you give the ECU for example 500mbar corresponds to 1000mbar Otherwise higher processing is not possible. (ASM changes are inevitable)
disadvantageous you change the resolution a little bit ,
from ori ECU files:
DSLGRAD
stock map->541.00
3bar map ->658.81
4bar map ->875
DSLOFS
stock map-> -16.41
3bar map -> -63.52
4bar map -> 62.5
-> How do the VCDS edits work, is it just a report x 2 edit or something else?
= yes the formula has to be edited, similar to edc15 16 only that you have to do it in code
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« Last Edit: October 20, 2022, 06:50:07 AM by sonflasch »
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IWay
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« Reply #7 on: February 10, 2021, 04:06:27 AM »
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= you give the ECU for example 500mbar corresponds to 1000mbar Otherwise higher processing is not possible. (ASM changes are inevitable)
disadvantageous you change the resolution from 10mbar to 20mbar ,
I understand the principle, I was asking what are the ASM edits specifically changing and asking why the 2560mBar limit can't be edited in the ASM thus avoiding the whole 5120 hack? Is there something in the ROM which prevents a simple edit in the EPROM, if not I can't see why an edit of the EPROM code wouldn't lift the 2560mBar limit? Thanks for your answer on the VCDS edits. |
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nyet
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« Reply #8 on: February 10, 2021, 01:37:57 PM »
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why the 2560mBar limit can't be edited in the ASM
You completely misunderstand the nature of the limit. |
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IWay
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« Reply #9 on: February 11, 2021, 01:51:29 AM »
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Enlighten me
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prj
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« Reply #10 on: February 11, 2021, 01:58:46 AM »
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Enlighten me
How about enlighten yourself with the info that's been posted on here time and time again. |
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IWay
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« Reply #11 on: February 11, 2021, 02:57:09 AM »
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I'm not expecting to be spoon fed.
I was expecting a look here https://........ response.
Tried looking through the posts but can't find the required information.
Please send a link so I can enlighten myself.
Thanks
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IWay
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« Reply #12 on: February 11, 2021, 04:16:30 AM »
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Somone pointed me in the right direction.
Without compling the whole thing you can't just use two registers next to each other to store a number larger 255.
If you were just to use 0.1*255 instead of 0.01*255 to represent boost, the resolustion would go down to 100mBar.
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nyet
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« Reply #13 on: February 11, 2021, 12:43:16 PM »
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Somone pointed me in the right direction.
Without compling the whole thing you can't just use two registers next to each other to store a number larger 255.
If you were just to use 0.1*255 instead of 0.01*255 to represent boost, the resolustion would go down to 100mBar
A register is 16 bits not 8. ps_w and rl_w are 16 bit quantities. |
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IWay
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« Reply #14 on: February 12, 2021, 02:39:48 AM »
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Lost me now, if it's 16 Bit a value of 65536 can be stored.
Where is 2560 limit comming from?
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