52mm TINTED AIR FUEL RATIO GAUGE KIT

Product List

1: Air/Fuel Ratio Gauge (digital 12/24V or pointer 12V)

2: Controller box

3: Four Wires connected to the controller box

1>Power wire of controller box (150cm, 2P)

2>Oxygen sensor wire (300cm, 6P)

3>Gauge wire (200cm, 3P)

4>USB wire (100cm, 4P)

4: Oxygen sensor bung

5: Installation instruction

6: LSU4.9 Wideband oxygen sensor (available for separate purchase)

Function Instruction

1: Air/Fuel Ratio Gauge When the engine is working, the fuel and the air can be mixed to form a combustible mixture. The Ratio of air mass to fuel mass in the combustible mixture is the Air/Fuel Ratio.

The Air/Fuel Ratio Gauge can indicates accurate Air/Fuel Ratio based on, according to the processed signals from the Wideband oxygen sensor.

The default parameter of the Gauge is set for gasoline engines (applicable for both gasoline and diesel).

2: Controller box

The controller box uses Bosch's dedicated Air/Fuel Ratio chip, it can obtain the data from the LSU4.9 wideband oxygen sensor, and send it to the gauge and computer. The accuracy of the Air/Fuel Ratio can reach 0.1!

The LSU4.9 Wideband oxygen sensor can detect the Air/Fuel Ratio of multiple fuels. In addition, the controller box can analyze the Air/Fuel Ratio of a wide range of fuels.

1>Gasoline (the best Air/Fuel Ratio: 14.7)

2>LPG (the best Air/Fuel Ratio: 15.5)

3>Methanol (the best Air/Fuel Ratio: 6.4)

4>Ethanol (the best Air/Fuel Ratio: 9.0)

5>CNG (the best Air/Fuel Ratio: 17.2)

6>Diesel (the best Air/Fuel Ratio: 14.6)

Generally speaking, gasoline is thought as the default fuel for controller box. Since gasoline and diesel differ slightly in their best Air/Fuel Ratio, the Air/Fuel Ratio of gasoline can be used to detect diesel. (Attention!It should be noted that w When the voltage of diesel engine is 24V, the voltage needs to be converted to 12V through a transformer.)

3： Four Wires connected to the controller box

1>Power wire of controller box (2P): Connect 12V power supply

2>Oxygen sensor wire (6P): Connect the LSU4.9 Wideband oxygen sensor and the controller box