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 EFIE AFRs (Air-Fuel Ratio Controllers) D & N Automotive Engineering
HHO EFIE   AFRs (Air-Fuel Ratio Controllers)  D & N Automotive Engineering $75.00
Time Remaining: 28d 16h 27m
Buy It Now for only: $75.00

HHO EFIE for GM only
HHO EFIE for GM only $40.00
Time Remaining: 4d 14h 50m

Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF
Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF $250.00
Time Remaining: 1d 1h 44m
Buy It Now for only: $250.00

Digital Controller with CCPWM for HHO Kit. PWM, EFIE, IAT, MAP / MAF
Digital Controller with CCPWM for HHO Kit. PWM, EFIE, IAT, MAP / MAF $245.00
Time Remaining: 13d 23h 56m
Buy It Now for only: $245.00

" TWO "-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
$119.95
Time Remaining: 28d 18h 48m
Buy It Now for only: $119.95

" 2 "-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
$119.95
Time Remaining: 28d 15h 48m
Buy It Now for only: $119.95

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 $119.95
Time Remaining: 28d 13h 48m
Buy It Now for only: $119.95

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 $119.95
Time Remaining: 28d 11h 48m
Buy It Now for only: $119.95

AMP GAUGE 30A 12 VOLT HHO / EFIE /30A PWM. FINE CALIBRATIONS
AMP GAUGE 30A  12 VOLT  HHO  / EFIE /30A  PWM. FINE CALIBRATIONS $8.17
Time Remaining: 14d 16h 8m
Buy It Now for only: $8.17

HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP
HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP $128.06
Time Remaining: 9d 17h 41m
Buy It Now for only: $128.06

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