411 ecm narrowband simulation?
Thread Starter
Teching In
Joined: Jun 2016
Posts: 48
Likes: 4
411 ecm narrowband simulation? Has anyone had any luck using the lc1 narrowband simulation with the 411? I found this thread...
https://ls1tech.com/forums/pcm-diagnostics-tuning/419524-heres-how-wire-lc1-work-wideband-narrowband-same-time.html
... But I'm not sure what ecm its For and the link is dead for the wiring
https://ls1tech.com/forums/pcm-diagnostics-tuning/419524-heres-how-wire-lc1-work-wideband-narrowband-same-time.html
... But I'm not sure what ecm its For and the link is dead for the wiring
TECH Fanatic
Joined: Oct 2014
Posts: 1,220
Likes: 179
From: Virginia
Can't say I've ever seen this done, but I would assume the ECM is expecting a 1.2 v signal, therefore in the wiring for this I am assuming that the signal wire is added to the ECM as output 1, and 2 is the WB 5v analog signal. Just running output 1 to the PCM/ECM wire would be a start I guess, most of the info is there in the thread.
Personally, I've done just fine running a separate WB a few inches behind my bank 1 O2 sensor. Just a little welding required, which is easy peasy, and then you aren't trying to recalibrate a "narrowband" "WB" O2 sensor. That, and you get more data because you are effectively using 3 sensors instead of 2. I can see if my WB sensor is going bad based on my NB voltages, and vise versa. They do go bad btw, and quicker if you run it rich or use additives.
Personally, I've done just fine running a separate WB a few inches behind my bank 1 O2 sensor. Just a little welding required, which is easy peasy, and then you aren't trying to recalibrate a "narrowband" "WB" O2 sensor. That, and you get more data because you are effectively using 3 sensors instead of 2. I can see if my WB sensor is going bad based on my NB voltages, and vise versa. They do go bad btw, and quicker if you run it rich or use additives.
