For those of you who run the dual O2 sensors (one per engine side), how close are you getting your WOT A/F readings from one side to the other?

I am currenty reading .4 difference from the drivers side to the passenger side with a RPM dual plane intake. After some stagger jetting on the secondary jets, I have closed up this spread from .8 to .4 from one side of the engine to the other.
How close do you try to tune your A/F readings from one side to the other at WOT?

Thanks allot!!


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)