Innovative LM1 and LC1 WB's get a bad rap,some of it deserved, most of it not. The LC1 is the one that gets deserved bad press.I guess the software in the self enclosed controller can have a bug in it. But the main complaint with that brand is that it loses calibration easily and then needs a "free air" calibration.
I run one,LC1, and have no trouble with it. I think the calibration issues are directly related to the controllers hyper sensativety to ground offsets. So to avoid this one needs to be extremely anal about shared grounds and condition of those grounds.
I mean you cannot run one ground to the underdash metal and another to the engine block. If one did, then there is a chance that the reference voltage could be off due to ground offsets, and this seems to upset the lambda controller.
So the trick is to always use the engine block as the only grounding source. Those of us running the Innovative brand and taking this advice have run them with no trouble.
And remember, there are thousands of LM/LC 1 users with no complaints. The Innovative WB's are generally cheaper and use the over the counter Bosch WB sensor which can be had in 10 minutes at the local Autozone.
Nothing against PLX,AEM et al. They are great choices too, but I find them to be about $50 more per kit,or more.
...