AFRs on stock tune

[I<3flippyheadlights]

I just installed a wideband on my car before I put in a supercharger. I just wanted to know if the AFRs on my car are normal.

When I start it cold (over 9 hours of sitting) my AFR is in the 16s.

As it warms up it drops. At idle it 14.7-15.3

As I'm cruising (say 60 mph) my AFRs jump constantly from 14.7-15.5.

Just want to know if any of this behavior is normal for a stock, 1.6 car.

[Pfunk]

Those values are fine; what do you see under WOT?

[— kung fu jesus —]

Yeah, seems OK. A little lean over other stock B6s I've seen. Nothing to get twisted about. Pfunk is right, though, what does it read under load?

[I<3flippyheadlights]

Under WOT, at various spped and gears, it goes from 11.5-13. It generally floats around 12 though.

[jnshk]

Sounds about right. Like KFJ said, it seems like it might be reading a little bit lean (at least compared to my 1.8), but nothing to be terribly worried about.

[When letting the stock computer run the show instead of the MegaSquirt] Sometimes when I first start the car and it seems a bit lean (16ish) at idle, if I goose the throttle for just a second the closed loop kicks in and brings AFR back down to ~14.7, otherwise it continues to idle slightly lean until some other thing triggers the closed loop control (engine temp?, timer?, something?).

[— kung fu jesus —]

WOT readings seem nomal.

[silvermazda]

I have a wb on my nb. like KFJ said, looks a tiny bit lean.
Mine starts at 12-13some then goes down to 13.5 then 14.3-7 for most days. If I give it a little throttle while warming it up it tends to lean it to 15 or 16 aka it warms up quicker. Although, every 5-10minutes it goes to 11's. I guess its to cool down the cat.