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.

Unique EFIE for Narroband (O2) Sensors HHO Edition Advanced No Like It On Market
Unique EFIE for Narroband (O2) Sensors HHO Edition Advanced No Like It On Market $49.95
Time Remaining: 4d 11h 51m

EFIE Dual Oxygen Sensor Fuel Saver, hho dry cell kit
EFIE   Dual Oxygen Sensor Fuel Saver, hho dry cell kit $59.00
Time Remaining: 21d 12h 43m
Buy It Now for only: $59.00

Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF
Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF $285.00
Time Remaining: 21d 11h 15m
Buy It Now for only: $285.00

Digital Controller with CCPWM for HHO Kit. PWM, EFIE, IAT, MAP / MAF
Digital Controller with CCPWM for HHO Kit. PWM, EFIE, IAT, MAP / MAF $275.00
Time Remaining: 21d 10h 4m
Buy It Now for only: $275.00

HHO Digital EFIE version 041
HHO Digital EFIE version 041 $59.99
Time Remaining: 3d 19h 55m
Buy It Now for only: $59.99

" TWO "-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
$99.95
Time Remaining: 12d 16h 25m
Buy It Now for only: $99.95

" 2 "-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
$99.95
Time Remaining: 12d 13h 25m
Buy It Now for only: $99.95

DUAL-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
DUAL-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available $99.95
Time Remaining: 12d 11h 25m
Buy It Now for only: $99.95

TWIN-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
TWIN-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available $99.95
Time Remaining: 12d 9h 25m
Buy It Now for only: $99.95

AMP GAUGE 30A 12 VOLT HHO / EFIE /30A PWM. FINE CALIBRATIONS
AMP GAUGE 30A  12 VOLT  HHO  / EFIE /30A  PWM. FINE CALIBRATIONS $9.19
Time Remaining: 28d 13h 45m
Buy It Now for only: $9.19

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