my A/F gauge is pegged on lean?

i just installed an air fuel ratin gauge. when i start the car its pegged on lean. the red light is very dim until i rev the engine then it gets bright. if i mash the throttle is lights up 1 or 2 more leds but is still in the red (lean). the car was recently tuned and the a/f i know is fine. could i have bad 02 sensors?
 
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IMO narrow bands are pretty much worthless. are your A/F's good while driving? if so, I wouldn't worry about. I would definently invest in a good wideband though, so you always know exactly what is going on with the a/f ratio's. just my .02
is 55lb idle with the vac line unplugged? is that where the tuner set it? if it is I wouldn't mess with it, although it sounds a little high to me, especially if that is the base pressure.