stock o2 temporary tuning?

hey guys im coming pretty close to be over with my turbo setup
t-3 .48 .42
uberdata
450
7 psi
etc…
i bought all uberdata chip and datalogging stuff, and i’d like to know if i could do a little temporary tuning because i dont have access to a dyno#wideband tuning right now. is it possible to do it (what is the accuracy of the o2 sensor near the 12:1 portion ?) i dont want a perfect tuning, i only dont want to blow the engine!

you really cant do any tuning without a wideband

maybe in the idle area and under very light load you can play and change the fuel maps to where it feels good and isnt blowing out an overly rich exhaust

but thats about it

all right then, ill just be burning tons of gas until i get to the wideband !

do you know the values (in volts) the o2 sensor produces at certain A/F ratios? i cant find it anywhere on the web?

Don’t run it retardely rich or you’ll wash the cylinders