innovate wideband o2

I also want to go this route and have decided to do the dual sensor system. However, the single sensor should work just fine on one side without the need to swap back and forth between bank.

Also, I was thinking about installing the single sensor (When I was contemplating a purchase of the single sensor unit) in/at the junction of the X pipe.

Since it is pricey to begin with, I'll save a few bucks more for the dual sensor system.