help with A/F data

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Old Apr 27, 2013 | 02:01 PM
  #1  
kens fx4's Avatar
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From: leroy, ohio
help with A/F data

ok.. so i have a x3 and a aem wideband gage

i've got it all wired up and can see it logging on the livewire program

but when i run the truck the gage shows me one thing
then i look at the data i log and its another thing

example gage shows 12.6 and data shows 11.2

big diffrance.. why? wich one is correct..

thanks for any info

Ken
 
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Old Apr 27, 2013 | 06:26 PM
  #2  
twinskrewd's Avatar
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From: North Carolina
Hope it's the 11.2 if you are at WOT. 12.6 will snap a rod. Is your gauge calibrated properly? Also is your gauges O2 sensor located before or after the cats?

A quick example of gauge calibration from my experince. Troyer set my tune to command 14.1 as stoich to account for a maximum of 10% ethonal content. My wideband read 14.7 as this was its factory setting. Once I calibrated it for 14.1 it read properly at idle and reads 11.2 at WOT as commanded in the tune.
 

Last edited by twinskrewd; Apr 27, 2013 at 06:31 PM.
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Old Apr 28, 2013 | 01:38 PM
  #3  
kens fx4's Avatar
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From: leroy, ohio
first.. the os is before the cat.

you can NOT calibrate the aem gage...(talked to them already on that)

and the gage reads 12.6 WOT
but the data log info reads 11.2

so me and the tunner are going round and round..

so i chould make the data log read the same as the gage


thanks
 
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Old Apr 29, 2013 | 08:41 PM
  #4  
scobar's Avatar
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From: Colorado Springs
Originally Posted by twinskrewd
Hope it's the 11.2 if you are at WOT. 12.6 will snap a rod. Is your gauge calibrated properly? Also is your gauges O2 sensor located before or after the cats?

A quick example of gauge calibration from my experince. Troyer set my tune to command 14.1 as stoich to account for a maximum of 10% ethonal content. My wideband read 14.7 as this was its factory setting. Once I calibrated it for 14.1 it read properly at idle and reads 11.2 at WOT as commanded in the tune.
How does one calibrate?
 
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Old Apr 30, 2013 | 12:19 AM
  #5  
twinskrewd's Avatar
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From: North Carolina
The Autometer gauge has the instructions with it. If you have misplaced them like I did heres a link http://www.autometer.com/download_instruction/1143A.pdf
 
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Old May 4, 2013 | 05:17 PM
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88racing's Avatar
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From: In the fast lane from LA to Tokyo...
are you using the correct gauge equasion in the settings before you datalog.....

when you select the gauge in the laptop screwdriver make sure you click apply....
 

Last edited by 88racing; May 4, 2013 at 05:19 PM.
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