The PWM HHO Generator Controller Parts Specifications

) PWM Unit MX66 Two Transistor PWM
20A RMS 30A MAX

2) Black ABS Plastic Enclosure
Size 4.7" x 3.2"x 2.2" with mounting flange

3) Cooling Fan - 60mm x 10mm Ball Bearing Fan

4) Adjustment Knob

All the holes are pre-drilled and unit comes fully assembled with the fan leads soldered to the board.

You will have to unmount the board by removing two screws and the pot retaining nut to make the connections to the PWM

To install just feed the wires through the large holes in the back of the box connect the two power wires to the two outside spade

connectors making sure the + wire goes to the + spade on the PWM and connect the HHO generator to the inside two spade connectors.

Full Installation Instructions come with this HHO pulse width modulator

The pulse width modulator (PWM) has an onboard trim potentiometer to control the amount of RMS voltage and current to your hydrogen booster

Your HHO Generator will run cooler and make more hydrogen which has greater ability to increase fuel mileage.
The PWM pulses at 100 Hz.

This PMW may be used on any 12 volt systems only

EFIE (Electronic Fuel Injection Enhancer)

Fuel Injection

Fuel injected vehicles use a computer and sensing devices to sense and maintain the correct air/fuel ratio. One of the key sensing devices is the oxygen sensor. Fuel injected vehicles have one or more oxygen sensors installed in the exhaust stream. The computer extrapolates what the air/fuel ratio is based on the amount of oxygen in the exhaust, as reported by the oxygen sensor.
When Hydrogen on demand device is installed, the petroleum based fuel is burned more completely. One of the results of this is that there is more oxygen (and less unburned hydrocarbons) in the exhaust stream. This is a good thing, and is in fact, what we are trying to achieve. However, the computer will perceive this condition as a "too lean" air/fuel mix. In other words, what is now a desirable condition in the exhaust will be interpreted as "not enough gas", and the computer will direct the fuel injectors to increase the amount of gas being pumped into the engine.The result is that the oxygen sensor and computer prevent efficient combustion from occurring

The Solution
The oxygen sensor "tells" the computer what the oxygen content is by providing a voltage on it's signal wire between 0 and 1 volt. 450 millivolts (.45 volts) means that the fuel/air mixture is correct. Higher values means the mix is rich (has too much gas), and lower voltages means the mix is lean. By adding voltage to the sensor's output, we can compensate for the additional oxygen in the exhaust.
The Electronic Fuel Injection Enhancer (EFIE) does exactly this. It adds a floating voltage to the top of whatever the oxygen sensor is putting out. It has an adjustment that allows you to control, to within a few millivolts, the amount of this added voltage. This allows the computer to be unaware of the additional oxygen content of the exhaust, and the electrolyzer can now achieve it's full potential in fuel savings.
Most cars have oxygen sensors both before and after the catalytic converter. The ones downstream from the converter do not need to be treated. Their data is used to determine when the converter has gone bad, but are not used in the air/fuel calculations. EFIEs are only needed for all upstream oxygen sensors