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problems logging boost and afr in evoscan

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Old Nov 14, 2017, 09:57 AM   #1
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problems logging boost and afr in evoscan

hello guys just installed evoscan recently and im knew to using it my car evo 8 has aem uego afr gauge which I think already has white wire connected to pin 75 my problem is when editing the Eval and putting 0.03913*x+9 im not getting accurate afr with my gauge my gauge is at 15 and logged afr is 10 if I increase equation to x+15 afr becomes close but when my gauge drops to 14 my logged jumps to 16


Another problem whit my Omni 4 bar map sensor which is not calibrated in evoscan when I insert the eval and metric eval shown in previous threads around here
I get evoscan error RAX_DAT_D MUST preceed boost (map) move RAX_DAT_D TO above boost(Map)
anyhelp would be greatly appreciated
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Old Nov 16, 2017, 06:33 AM   #2
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Originally Posted by Evo8life View Post
hello guys just installed evoscan recently and im knew to using it my car evo 8 has aem uego afr gauge which I think already has white wire connected to pin 75 my problem is when editing the Eval and putting 0.03913*x+9 im not getting accurate afr with my gauge my gauge is at 15 and logged afr is 10 if I increase equation to x+15 afr becomes close but when my gauge drops to 14 my logged jumps to 16


Another problem whit my Omni 4 bar map sensor which is not calibrated in evoscan when I insert the eval and metric eval shown in previous threads around here
I get evoscan error RAX_DAT_D MUST preceed boost (map) move RAX_DAT_D TO above boost(Map)
anyhelp would be greatly appreciated
bumppp anyone can help please ??
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Old Nov 16, 2017, 04:00 PM   #3
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Originally Posted by Evo8life View Post
I think already has white wire connected to pin 75
I would start off by confirming this.

Have you tried uninstalling Evoscan and re-installing it with 4bar values? Sometimes weird **** just happens in evoscan.

Also, through up a log.
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Old Nov 16, 2017, 05:47 PM   #4
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You should just buy a serial port adapter and log afr through it
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Old Nov 17, 2017, 09:23 AM   #5
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Are you using the rear o2 sim?

For you map sensor issue, post the formula and a screen shot of your ecuflash data items. Looks like it's expecting some value to be present before the MAP value is computed? I'm not sure
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Old Nov 18, 2017, 08:29 AM   #6
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Originally Posted by seeaich View Post
I would start off by confirming this.

Have you tried uninstalling Evoscan and re-installing it with 4bar values? Sometimes weird **** just happens in evoscan.

Also, through up a log.
i attached 3 logs of wot pulls 4 BAR map sensor and afr are at right end of the page with values way off will confirm pin 75 connection tomorrow
Attached Files
File Type: csv EvoScanDataLog_2017.11.16_21.35.26.csv (239.9 KB, 0 views)
File Type: csv EvoScanDataLog_2017.11.16_21.40.28.csv (72.6 KB, 0 views)
File Type: csv EvoScanDataLog_2017.11.16_21.47.29.csv (53.2 KB, 0 views)
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Old Nov 18, 2017, 08:30 AM   #7
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Originally Posted by 4b11slayer View Post
You should just buy a serial port adapter and log afr through it
where can I buy it and what does it actually do
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Old Nov 18, 2017, 08:44 AM   #8
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Originally Posted by butte View Post
Are you using the rear o2 sim?

For you map sensor issue, post the formula and a screen shot of your ecuflash data items. Looks like it's expecting some value to be present before the MAP value is computed? I'm not sure
the eval im using is 0.2369*x with psig as unit you check my logs if you don't mind
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Old Nov 18, 2017, 09:01 AM   #9
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Please look at this.


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Old Nov 18, 2017, 10:06 AM   #10
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Please look at this.


thanks man ill try this equation and see what happens
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Old Nov 19, 2017, 05:12 AM   #11
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Originally Posted by mines5 View Post
Please look at this.


the omni equation worked with -24.7 instead of 14.7
But still facing issues logging afr equation didnt worked should look to see if connection to pin 75 is already made
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Old Nov 19, 2017, 06:38 AM   #12
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Try Pin 73
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Old Yesterday, 07:47 AM   #13
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Originally Posted by 4b11slayer View Post
You should just buy a serial port adapter and log afr through it



While searching ive found this connector with 2 black and bkue wire is that supposed to be a serial port connection for the afr?its right under the dash
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