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ECMlink Lc1 wb02

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1SIC1Gb

10+ Year Contributor
353
73
Jun 25, 2012
Houston, Texas
I am installing my LC1 Wideband and i followed the steps on ECM Tuning and wired it to the O2 wire(white). I "T'd" in all the wires into the wiring harness about 3 - 4 inches from ecu plug. Am i supposed to cut the white wire instead of "T" in the LC1 Wire? I got it wired up and did open air calibration with the l.e.d and everything went according to plan. Then the instructions just kind of run out with it saying install disc (which seems to be just a dashboard?)

I installed the sensor in the Front o2 spot and simulated narrowband according to the info i could find. From what i found, the switching point is supposed to be 2.44 with the LC1? Then changed the ECU inputs to Front 02 to LC1.

Started it and i got 7.4 flashing all the time (i have the optional guage too)

what am i missing?

Heres a log showing my settings.
 

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alright cut the white wire and i started getting readings.

Re calibrated Airflow but it seems my wb02 is reading off? I did the open air calibration like the instructions said. Under WOT i have it set to be 10.8:1 but my wb is reading like 8.2:1? Also the readings are all over the place!

heres a log.

Sorry log didnt post here it is.
 

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alright latest update after reading a million posts was i am trying the settings from this thread on both
http://www.dsmtuners.com/forums/tuning-engine-management/437968-lc-1-wb-confusion.html

0v = 7.35 5v = 22.39

I beleive the WB to be close because my car was breaking up bad when building boost around 3200-3500 rpm and i suspected it being too rich. I played with the fuel table just for a little bit tonight and got it to go away (tracked the problem cells and incresed target a/f all the way to 12.8:1) still only showing around 8.5-9:1 on the WB and i know i can go up more...pulled my plugs last night and they had some black soot on them indicating rich.

My question is how to get a/f est to match the WB as it is obviously off? i would rather input the target that i want instead of something crazy like 14:1 to get 11:1!!

log!
 

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Last edited:
Definately went through the list first.

My base fuel pressure is 53psi . I adjusted deadtime to compensate though
 
mafcomps get your actualafr and afrest lined up. Theres an amazing thread on here where craig goes off and explains everything in a very easy to understand way. So simple after you read it.
 
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