well I just made a run and downloaded it with freescan , was looking at the o2 ( was a little rich) L was around 940mv R at 890mv , is this variance too much , or ok ? also a few spots showed the mv @0.95 @5250 rpm then the next one was @ 941 mv , this also happend once , or twice with the Lo2 and the Ro2 , not @ the same rpm , it was the L or the R @ differnt rpm is this normal , it look's like it records data @ 4 or 5 times a second