O2 and MAP/MAF sensors

Here is some info on the sensors and how they work:
O2 sensor: as far as I can tell they O2 enhancer is sometimes called EFIE, rather than make a long post I found a fairly good article on the O2 sensor and plans for enhancer for use with HFE Cell.
Seems you need one of these [...]

MAP-MAF-O2 sensors

Much info has started to come in on the sensors that need to be bypassed or altered to allow the HFE Cell to work with newer fuel injected engines, so a new category has been added.
Please post that info here.