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What is HHO EFIE for O2 sensor?
First some terms you you may or may not familiar with -
EFIE -
Who need HHO EFIE is anyway??
Everyone who want to save fuel and really increase his MPG using HHO device need to know this: Car computer (ECU) ruins fuel saving by injecting more fuel than necessary when using HHO. Luckily solution is found:
The most accurate way (and the most recommended in my
opinion) to make your car burn less gas when using
a HHO device is by connecting a device called EFIE between
your oxygen sensor and the ECU (car’s computer). The EFIE
device is changing the signal coming from the O2 sensor.
As a result the ECU maintains a different, lower air/fuel ratio
(instead the original 14.7/1) and fuel economy rises.
Good EFIE example is here.
Principles of work (technical details):
ECU and the oxygen sensor: gasoline engines is designed to work in
air/fuel ratio of 14.7/1. oxygen sensor is used to read the oxygen value
in the exhaust. Because our engine works in cycles the oxygen reading
is constantly changing between 0.1 to 1 Volt.
The ECU works hard to maintain a constant average of oxygen: if average value too low (too little oxygen), the ECU cut’s down on fuel supply. If average value too high, the ECU orders more fuel to be injected. Be aware: bad/too old oxygen sensor wont let you to gain high MPG, If you sensor is older than 40000 miles replace it at once. Get new sensor here.
So what is EFIE anyway: Now, when you add a hydrogen gas saver to your car, HHO gas is added to the intake air of the engine. As a result not all the oxygen participates in the combustion and more oxygen is emitted through the exhaust.
The problem: the ECU “senses” more oxygen than usual and orders more fuel to be injected to compensate. This action ruins any gas economy gained thanks to hydrogen gas saver.
The solution: EFIE -
The EFIE contains a On/Off switch, when On means the device is working and adjusting
the air/fuel ratio to value of our choice, where Off means the car is running at
the original air/fuel ratio. This means that when taking out the hydrogen device
for maintenance you just need to set the switch to off position and return to “normal”
injection mode without messing with wires or anything else. Possible to build yourself
-
(what is today considered “normal” injection is in fact “the modern art of inefficient fuel burning” :)
If your car have two O2 sensors on the exhaust pipe, between the engine and the catalytic converter, you need to connect both of them to EFIE. In this case special EFIE required called Double EFIE. Alternatively, you can use two “regular” EFIEs, one per each sensor (this is not a straight forward option because each EFIE need to be adjusted separately).
The HHO EFIE schematics - Build it yourself
If you have basic knowledge in electronics you can construct by yourself HHO EFIE
circuit. Use schematics from E-
If you don’t want to get your hands
dirty you can get single or double
EFIEs for reasonable price. They
are easy to use and has
complete instructions how
to install and operate.
Very Recommended devices: Get it from here.
