I believe that the point of the narrowband output is to be just good enough not to throw a check engine code. If you are still using the stock ECU, the narrowband output is unlikely ideal for performance or mileage. I would just drill the secondary hole several inches away from the location of the stock sensor. That's what I do anyway. I've only used the LC-1. I've used a couple versions of it for 8 years now. It is probably the most accurate, but is definitely temperamental. It is very sensitive to proper grounding and voltage spikes. It can also get confused and need to be reset. I have my secondary output configured to drive a gauge, rather than a narrowband output. You can calibrate the sensor to ensure accuracy throughout its life. Some of the simpler controllers don't let you do that.


Corbin
'95 ESI-T

Now with more power and fewer leaks



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