EFIE known as Electronic Fuel Injection Enhancers are used to help regulate or adjust the voltage on an oxygen sensor. Most of these dual EFIE circuits or EFIE circuits are to be purchased for water4gas plans or other comparable HHO plans. This module or circuit is usually added between the oxygen sensor and ECU or electronic control unit. This circuit is often added on some vehicles because when an HHO kit is installed the exhaust is so clean that the voltage produced by the O2 sensor can cause the computer to compensate by adding more gasoline to the mix thus reducing gas mileage. An HHO EFIE circuit adjuster is used to aid in this situation. Buy a EFIE Kit to ensure you hydrogen HHO generator system is working at peak efficiency.

HHO Digital EFIE 04
HHO Digital EFIE 04 $59.99
Time Remaining: 6d 1h 44m

Dual EFIE (Electronic Fuel Injection Enhancer) Oxygen Sensor Control HHO Device
Dual EFIE (Electronic Fuel Injection Enhancer) Oxygen Sensor Control HHO Device $84.95
Time Remaining: 1d 19h 36m

Quad EFIE (Electronic Fuel Injection Enhancer) Oxygen Sensor Control HHO Device
Quad EFIE (Electronic Fuel Injection Enhancer) Oxygen Sensor Control HHO Device $104.95
Time Remaining: 1d 19h 36m

HHO Digital EFIE 04 and 30A PWM
HHO Digital EFIE 04 and 30A PWM $79.99
Time Remaining: 5d 1h 25m

HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP AIR/FUEL RATIO MODULE
HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP AIR/FUEL RATIO MODULE $75.00
Time Remaining: 26d 7h 33m
Buy It Now for only: $75.00

Electronic Fuel Injection Enhancer- EFIE for Narroband (O2) Sensors, HHO Edition
Electronic Fuel Injection Enhancer- EFIE for Narroband (O2) Sensors, HHO Edition $89.95
Time Remaining: 11d 11h 18m
Buy It Now for only: $89.95

HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP
HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP $125.02
Time Remaining: 28d 19h 18m
Buy It Now for only: $125.02

1999 99 VW New Beetle ZX2 OBD Fuel Saver HHO Kit EFIE Volo FS2-HHO
1999 99 VW New Beetle  ZX2 OBD Fuel Saver HHO Kit EFIE Volo FS2-HHO $95.99
Time Remaining: 7d 5h 30m
Buy It Now for only: $95.99

Water Blocking Bubbler Filter, pkg of 5, HHO, water gas,EFIE, hydrogen, dry cell
Water Blocking Bubbler Filter, pkg of 5, HHO, water gas,EFIE, hydrogen, dry cell $13.95
Time Remaining: 24d 13h 28m
Buy It Now for only: $13.95

HHO Computer Chip Fuel Saver Efie enhancer
HHO Computer Chip  Fuel Saver Efie enhancer $102.00
Time Remaining: 5d 9h 6m
Buy It Now for only: $102.00

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