too lean at idle

[Emperor_Tha]

i finally got my car running smooth. on the autometer a/f gauge it states the car is running very lean, it passes the last light while at idle. when i give it gas it gets to the rich side. this is a black s13 with fmic , walboro 255, 93 octane and stock injector. is this normal for it. maybe a bad o2 sensor reading it wrong, its still the same one from the swap.

[Emperor_Tha]

Well, I used the search function to find out exactly that.

We just got around to install the AEM UEgo on my brother's JDM S13 and at WOT it goes around 13.2-13.3 till redline. At idle and cruise, it goes off the AEM cahrt (above 17).

We talked to a fellow SR20DET owner and he said that his does the same.

My brother's car is also running around 10psi of boost....and I'm also from the SRT world which knocked me off when I saw those readings :!

Did you get an update on this situation ?