I just picked up a LC-1 wideband controller and got it hooked up. I'm just looking for an idea of what is normal.
For example, what ratio should it be;
Cold start-
Idle-
Decel-

I dont really like seeing it get near 20:1 when its cold and was curious how long it took to warm up. Thoughts?

 

Do you have long tube headers as that will make it take longer to get the sensor warmed up. idle should be stocichometry or 14.7:1 and deceleration will make some weird lean readings also.

 

subscribing...looking to pick one up myself at some point

 

Stock manifolds and a X-pipe. I've got the wideband sensor in one of the rear holes since I'm not using them, since its that far back, I was thinking that was part of it, but I did some datalogging today and my Short term fuel trim 1 is close to 0 and STFT 2 is trying to pull fuel out. So I think one of my O2's is going south, since one has been replaced and one hasn't.

 

I'm not sure what it needs to be for a N/A car, but for the guy with the Cobra you want like 11.5:1. I want to say that it needs to be around there for all forced induction cars. At idle mine goes between 14 and 15.