Am I running lean?

[DROPthatCLUTCH]

I'm getting around 10:0.7 reading at WOT.
When I'm just driving normally, it's more like 15:0.6...
I've never actually seen the o2 voltage hit 1 before.

Only running 12psi.

These are readings off of the apexi turbo timer, it has afr and o2 displays on it.

I know that narrowband isn't accurate at all, but could this show me signs of anything? Like a bad o2? Do you think I'm actually running as lean as it says?
Or should i completely just ignore those readings and get a wideband?

I'm ordering a palm mmcd logger ASAP to see how much, if any, knock I'm getting.

 

[Absit]

Everything you posted sounds like normal function. Why do you think you're running lean?

 

[98mitsubishigst]

Correct me if I am wrong but... I'm almost certain narrowband's are worthless.. And you need a wideband to tell for sure if your running lean or rich.. Using a turbo timer to monitor this sounds ... like it wouldn't work.

 

[RogueTalonTSI]

Narrow bands o2 gauges ARE worthless. I would definitely get a palm logger. With a palm logger you can monitor your fuel trims if you see a trend in those in one direction or the other you will know if your needing more or less fuel.

 

[VETTE_50_TH]

You are running VERY rich for WOT on 12 psi of boost. Needs a major retune

 

[phunny]

The lower the Air/Fuel the more fuel you have. So you're running rich if it's 10:1 during a pull

 

[RogueTalonTSI]

You guys are missing the point. A narrowband o2 gauge is useless for reading a/f. A narrow band o2 is only a switch between high and low. It does not provide a real reading.

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