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Ok thanks Joe. I guess ill try to put another bung in the passenger side manifold and run 2 o2s since i cant get this thing to work right in ol


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Can i attempt to run closed loop off of one o2 sensor? My one manifold has a bung in it still and i can swipe an o2 sensor off of one of my spare engines.


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What all signals are needed to control the 4L80 other than transmission sensors. At work we are currently in the process of doing a 12 valve cummins swap into a 2002 suburban. The customer was...

So i have read through this entire post a couple times now and I am still lost on how the spread sheet actually works. Can someone please help me clear this up?


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Ok so this thing is still doing it. I have been doing some reading on other sites and some guys running way bigger injectors than me are having no issues maintaining idle using hp tuners. They...

Ok i will give it a shot when i get home from work tonight. Thanks again


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Yep i get the just of it. I will have to play with it until i get it fixed up


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Ok i will give it a shot thank you very much.


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So basically that would be the same issue i am having now just backwards so its not worth messing with that. Any other thoughts?


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Well i fixed these tables and readjusted the ve and it is still doing it. No matter what changes i make it will always eventually start out at my desired or a little leaner and then as it gets warm...

Yes its factory truck rails with the vacuum line hooked up still


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here you go i started it waited for the idle to stabilize and then blipped the throttle. 20257

Here is the latest tune20253 and log 20254

Sorry log


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Any other pids you want to see other than what is in my previous tune


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Yes the tune is exactly the same just with the temp blending back on.


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So I give up. This thing still after a month of messing with it daily. I can not get it to maintain afr from one day to the next. Some days it may start at 15.5 and get to 13.8. Other days it may...

Tried the new tune this morning it wouldnt run at -1.5. Finally got it down to a -.4 and it fires right up at 15.6 afr but still the same thing once warm its in the lower 13s. Do i need to add...

I am fairly sure the injector data is correct as it is from a known good tune that isn't having this problem. I will give the -1.5 a try. Hopefully that helps cause I am totally out of ideas

...

Anyone?


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Here is the tune for the log file Joe.20119

No one???


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Anybody have any other ideas.


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Had a few mins spare time this morning so i tried zeroing out that table and smoothing out the ve table. Still will not maintain. Starts around 14.0 and drops to about 12.2 at the end of the log....

Isky triple 12. 212/212/112 .585 lift. Ok I will give that a try. thanks so much for everyones help. I appreciate it so much i have been battling this for almost 6mos.


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