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 Map Enhancer EFIE Map MAF MINI enhancer
HHO Map Enhancer EFIE Map MAF MINI enhancer $12.50
Time Remaining: 29d 51m
Buy It Now for only: $12.50

Digital Controller with CCPWM for HHO Kit. PWM, EFIE, IAT, MAP / MAF
Digital Controller with CCPWM for HHO Kit. PWM, EFIE, IAT, MAP / MAF $295.00
Time Remaining: 17d 19h 9m
Buy It Now for only: $295.00

Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF
Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF $300.00
Time Remaining: 4d 20h 14m
Buy It Now for only: $300.00

" TWO "-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
$119.95
Time Remaining: 2d 14h 2m
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: 2d 11h 2m
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: 2d 9h 2m
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: 2d 7h 2m
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 $8.35
Time Remaining: 18d 11h 21m
Buy It Now for only: $8.35

HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP
HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP $106.29
Time Remaining: 13d 12h 55m
Buy It Now for only: $106.29

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: 21d 23h 6m
Buy It Now for only: $95.99

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