what does a "normal" WB O2 pattern look like. on the histogram it looks like a sawtooth and bounces all over the place under acceleration and deacceleration. in the charts it looks lean (+-15) most of the time. my NB O2s don't seem to read right either. i suspect that i may have an exhaust leak (i put on headers) and i have the WB just installed in the driver's side midpipe (no cats). i did a free air calibrate a couple of times and i'm reading at 1/6th. anybody have a screenshot of a "normal" LS1 WB O2?