Poor mans EFIE?

[innovation_station]

i was impressed by this lil circuit ....




i do recomend this unit

in my testing so far it has been worth the build time

ist 

makeing 1 more as i have 2 o2 sensors....

[hunter]

I don't know how to make it, so I bought mine from Eagle Research. I don't make that much HHO yet to see any need of it at the moment since I have O2 extenders installed, but when I finish my new generator  that will need it.

[qld]

Hi Innovation,is it possible to post a better picture of the inside of the box so we can see where the wiring goes because i'm a bit confused about the pot wire going back to the - side of the battery in the layout, thanks

[pese]

I found this alternative, cheap and easy to make circuit to alter the O2 sensor signal compared to a full EFIE device. It was buried in chapter10.pdf, I cannot find any more information on it. Can anyone provide feedback on it?

Jes this will work.
if the Potmeter is left position (slider  is  to Minus of battery-Level , than ist same as "off",
so you must not angry to try this "sensetiv" to "shift" the level.
Pese

[Randohr]

My EFIE from Eagle Research is on back order, so I made this simple circuit and installed it.  It works great!!  I adjusted the resistor values up to lower the circuit current.  I use a 9vdc battery vs. the 1.5vdc AA for longer life.  I'm also built a variable voltage regulator for the MAP sensor.  My setup is a home made 4 cell series/parallel unit powered by a home built "Electric-light" PWM set at 10amps.  My EFIE is set at 175mvdc bias, MAP is set to 4vdc.  My results, as of yesterday, is an increase from 15mpg to 27.5 mpg. (first real test since installing working efie).  My engine temp is down, the engine runs quieter and smoother, I seem to have more hp to lug up hills in 5th gear and the small amount of h2o coming out my exhaust is getting cleaner.  I'm hoping for a repeat test result.  My test vehicle is a 91 F150 4x4 w/ 4.9L.   I first attempted to make this voltage divider circuit using dual voltage regulators powered off the vehicles 12vdc.  The problem is the mv output needs to float.  This circuit test "grounded" the O2 sensor.  This is the beauty of the Eagle research efie, it floats the mv output using a iso trans.  Simply...take a regulated dc input, convert it to ac, isolate it w/ a iso transformer, rectify it, filter and adj it for use w/ the O2 sensor.  No batteries to monitor and change when needed. 
Good luck, Gods speed
Randohr