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EFIE MAP/MAF (Electronic Fuel Injector Enhancer)

Installation & Operating Instructions.

The EFIE is not intended to be a fuel saver by itself. The EFIE is designed to be used in conjunction with fuel saver devices, such as a hydrogen gas electrolyzer, a fuel vapor production unit, or other devices that increase the efficiency of the burn.

MAP/MAF. (Manifold Absolute Pressure/ Mass Air Flow)

This EFIE will work with all 5 Volt variable voltage MAP/MAF sensors.

1. Features.

1. Soft Start Feature slowly increases the voltages offset when powered ON (For example: O2 sensor warm up delay).

2. Option to disable Soft Start Feature. 3. LED light indicates when the power is ON. 4. Additional Terminal Block makes testing the voltages (offset, input and

output) simple. 5. Special circuit design eliminates variance of actual voltage output, input

and offset when using voltmeter. 6. Adjustable offset. Range is adjustable from 0v to 2.5V and from 0v to

500mV (0.5V). 7. Normal connection from O2/MAP/MAF sensors to the ECU (vehicle

computer) when power OFF. 8. Fine tune with a 24 turn potentiometer. 9. Low current consumption: 25mA (0.025A). 10. Low temperature sensitivity +/- 2mV (0.002V). 11. Operating temperature: -35F to 220F (-37C to 105C). 12. Small size: 2" x 1.5" x 0.6 (51mm x 38mm x 15mm).

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2. Installation. Installation is the easiest if you have a Haynes, Clymer or Chilton manual for your car. If not, then you can buy wiring diagram from sites like http://www.ahdol.com, or http://www.autozone.com/shopping/vehicleSelect1.htm Next: 1. Locate your car’s year, make and model. 2. Select: “Repair Info” at the left side of the screen. 3. Select: “Vehicle Repair Guides”, “Chassis Electrical”, “Wiring Diagrams”. If you have a problem with obtaining a wiring diagram you can identify the wires yourself.

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Note: Instead of taking a chance by stripping insulation, you can take two sewing needles or poster pins. Turn ignition OFF. Pierce isolation so that the needles are touching the wire inside the isolation. Now you can measure the voltage.

Attach a minus of multi-meter to a minus of the car Battery.

Turn multi-meter to DC mode

Turn ignition ON. Don’t disconnect the MAP/MAF sensor plug. Wait for 3-5 minutes.

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Use multi-meter to probe the voltage between a minus of the car battery and three (or more) wires of a MAP/MAF Sensor. If you see 0 Volt between minus of car battery and one of the three wires of MAP/MAF sensor then that wire is a minus of the MAP/MAF sensor. If you see stable 5(12) Volt between minus of car battery and one of the three wires of MAP/MAF sensor then that wire is a +5(+12) Volt of the MAP/MAF sensor. If you see changes from 0 to 5 Volt between minus of car battery and one of the three wires of MAP/MAF sensor then that wire is a signal wire of the MAP/MAF sensor.

3. Locate 12 Volt power and Ground.

If you now install this EFIE, then you should already have installed a fuel saver device. Therefore, I think that you have already found the +12 volt and the ground (minus). The +12 volt is the best way for transferring from the fuel saver device.

The reason which is necessary to connect +12 Volt of EFIE to the +12 Volt of the fuel saver device is very simple: when you turn ON fuel saver device then simultaneously you turn ON EFIE and when you turn OFF the fuel saver device then simultaneously you turn OFF the EFIE. The EFIE works only when the fuel saver device works. In any case you can use an ignition

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switched power source +12 Volt to the EFIE. The EFIE will shut OFF when you shut OFF ignition key. If you previously have not established the fuel saver device, these resources can help: http://www.bulldogsecurity.com/wireing%20diagrams2.htm http://www.the12volt.com/ “Ground” (minus) can be the vehicle body (chassis ground), engine block or ground from another device. You can use MAP/MAF Sensor ground (minus).

4. Placing EFIE.

Before placing EFIE in the car – place jumpers as shown in picture 1. Installation of jumpers should be carried out only when the power is OFF.

Important: turn the variable resistor clockwise maximum (till the moment that you will hear a click or approximately 24 turns) to position Rich.

Picture 1

The best place for the installation of the EFIE is a place where the EFIE will be warm, dry and accessible to adjustment. As a last resort, the EFIE can be

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placed under the hood, but you should take care of water resistance and humidity resistance. We recommend that is better to be installed under a dash. The EFIE can be attached in the chosen place with Velcro. Due to this, it is necessary for you to pick up a suitable plastic box and attach the EFIE inside with the Velcro.

5. Connect EFIE wires.

Picture 2 Note: During connection and the lining of wires execute some simple rules: while lining the wires try not to lay wires near to details of the car which will be hot during the working of the car. At connection of wires don’t use crimp connectors. Solder wires, and then seal them with silicone, shrink-wrap or with liquid tape.

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Turn ignition OFF.

Remember: turn the variable resistor clockwise maximum (till the moment that you will hear a click or approximately 24 turns) to position Rich. Connect wire from the car ground (or MAP/MAF Sensor minus) (read section 3) to the EFIE connector (3) shown in Picture 2. Connect +12 Volt wire (read section 3) to the EFIE connector (4) shown in Picture 2. Cut the MAP/MAF Sensor “signal” wire. Connect wire from MAP/MAF Sensor side to EFIE connector (2) and wire from ECU side to EFIE connector (1). Remember, solder wires and seal them for prevention of corrosion.

6. Operation. Adjustments should only be made when the EFIE is powered ON and the engine is warm and running. Do not make any adjustments without the use of a volt-meter. Touch your meter leads to the “In” test pin (5), “Out” test pin (6), “Reference Voltage” test pin (7) on the EFIE to read the voltage while adjusting.

Picture 3 Note: For the “Ground” you can use a screw number 3 in Picture 2. Variable resistor adjustment range is approximately 24 turns and from about 0 to 2500 millivolts (2.5 volts). Step of adjustment up to a few millivolt. It is not necessary to wait time between adjustments. Start by turning the adjustment screws counterclockwise (Leaner) to increase the voltage offset to the computer. Turning the screws clockwise (Richen) will decrease the voltage offset. Remember that it is the subtractor, as increase of the voltage offset causes reduction of output voltage from EFIE and on the contrary. Be careful not to over turn as they may be damaged, however, they do have a built in clutch and are quite forgiving.

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If you notice any performance issues or your "check engine" light comes on, you've likely set the offset too high. You will need to lower the offset (turn clockwise) and reset the vehicles computer. This can usually be done by disconnecting the battery for a few minutes. Please refer to your vehicle owner’s manual for the recommended procedure.

7. Range Adjustments.

Turn ignition ON. Start turning the variable resistor counterclockwise. The process of adjusting the EFIE is trial and error. Watch for symptoms of too lean a mix such as rough engine, lack of power, "check engine light" coming on, etc. When these show up, adjust it by turning the adjustment screws clockwise (Richen) until the symptoms go away.

Set points can change from one gas station fuel to another, weather conditions, cold engine, etc. The differences are not large, but if you're on the edge, then the car will buck or vibrate, and you'll need to change the set point a bit.

Don’t overwork the engine by leaning it too much – play around until you find the PERFECT BALANCE point.

Always make adjustment EFIE at the connected multi-meter. Your never should be in extreme measures.

Measurements:

• Reference Voltage – minus of Multi-meter to a screw number 3 in the Picture 2, plus of Multi-meter to screw number 7 in the Picture 3.

• O2 sensor output signal – minus of Multi-meter to a screw number 3 in the Picture 2, plus of Multi-meter to screw number 5 in the Picture 3.

• Output signal from EFIE to ECU (vehicle computer) – minus of Multi-meter to a screw number 3 in the Picture 2, plus of Multi-meter to screw number 6 in the Picture 3.

Remember that your meter is a “load” and your reading will go down a few millivolts while connected. The special circuit eliminates this lack and allows us to not think about it. One condition: measure the voltage only on

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special test pins (“Ground” (you can use a screw number 3 in the Picture 2), “In” test pin (5 in the Picture 3), “Out” test pin (6 in the Picture 3), “Reference Voltage” test pin (7 in the Picture 3) on the EFIE to read the voltage while adjusting). Note: when the EFIE is powered OFF, it makes the connection between the oxygen sensor and the ECU (vehicle computer), the same as it was before the EFIE was installed. If you ever have need to reconnect the oxygen sensor directly to the computer, just turn the EFIE OFF (disconnect a wire +12 Volt).

Adjustment tip: If you have a high temperature probe, run down the highway with the EFIE turned OFF at least long enough to get the engine up to full operating temperature, and note the temp of your exhaust pipe (near the exhaust manifold). As you increase your voltage offset, this temperature may increase. Don't let it raise more than 180 degrees from your initial test.

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WARRANTY/DISCLAIMER

1. Your EFIE unit will have a 14 day warranty from the date of reception against defects in electronic workmanship in which the device fails to perform its function of regulating the frequency to the car's computer. Warranty is limited to the servicing of the EFIE unit. If it cannot be serviced then a replacement of comparable design or your money back will be sent to you. Any defective unit must be approved before returning. Buyer pays for return shipping.

2. By purchasing the EFIE unit, you agree: that you the buyer assume all risk & responsibility for any damages, injury or death which may occur as a result of incorrect installment and/or fuel adjustment.