[unicoladron]

yeah, you can install your a/f gague to compliment your collection of boost, oil pressure, oil/water temp gagues to make it look pretty. on a narrowband o2 sensor, just like stated above, can only tell you if you are rich or lean. the condition of your spark plugs can tell you that. a/f on narrow band are useless, but those full swepp LEDs look pretty cool tho.