As of two days ago...my AF Gauge only cycles from off-the-scale lean to the first stoich LED. Crusing or WOT...same thing.
When I stop and the car idles...ALL the LEDs light up!
What the hell is the deal with that?

Is it the gauge? Is my car actually running that lean?

 

add as much fuel as you can and see if it changes.........if it does not check the connection to the A/F guage. if there ok then the guage might be fucked.

 

Connect a volt meter to the o2 sensor and do a wot pull, it should say .90 or higher at full throttle. If its lower, then you are running lean. Also try checking your plugs to see what color they are.
Hope this helps.
EVIL

 

Yea I checked the plugs and they all checked out ok.

Im going to hook up a mutlimeter to the O2 sensor and see what it says.
I was also thinking maybe the O2 sensor was bad...but I tried switching the A/F Gauge to the 2nd O2 sensor..and same results...and I doubt both O2 sensors would go bad at the exact same time.