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These o2 readings look ok given my combo?

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Old 07-11-2010, 11:02 AM
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Default These o2 readings look ok given my combo?

My o2's were definitely hosed before. I found an issue with the heater circuit and got that resolved. Heres two pics of a scan and im curious if you guys think they look ok? They will only switch when I rev the motor past idle. When I return to idle, they stop switching. Details of my combo:

LS7 12:1 CR
TFS 245's
230 @ .050'ish .660'ish lift 110 LSA
Full length headers with o2 bungs in the merge collectors.

These are fairly new Denso o2's. Thanks in advance!
Attached Thumbnails These o2 readings look ok given my combo?-o2-2.jpg   These o2 readings look ok given my combo?-o2-1.jpg  
Old 07-12-2010, 07:55 PM
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Old 07-13-2010, 11:05 AM
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Looks like there's too much fuel at idle.

Looks like the HO2 voltages swing too slowly at part throttle.

Is your wideband working, because it looks wrong.

Your images don't show LTFT's.

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Old 07-13-2010, 11:12 AM
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Originally Posted by joecar
Looks like there's too much fuel at idle.
Yeah, this is quite possible.

Originally Posted by joecar
Looks like the HO2 voltages swing too slowly at part throttle.
This is what I was worried about.

Originally Posted by joecar
Is your wideband working, because it looks wrong.
It was disconnected when I ran that scan.

Originally Posted by joecar
Your images don't show LTFT's.
Yeah I was currently using a work in progress idle tuning config.

I appreciate your reply. At this point I am really leaning towards throwing the 02's in the trash and going OLSD.




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