Mad_Scientist_565

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

ChopperDoc

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.

JoeNova

Buddy of mine just got this working, but with a Spartan2 and not an LC1.
Wired the narrowband output from the O2 controller to the PCM. He said its working pretty good.

bks64SS