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: 28d 20h 14m
Buy It Now for only: $12.50

Map Maf Sensor Enhancer EFIE HHO O2 Hydrogen Hybrid Diesel
Map Maf Sensor Enhancer EFIE HHO O2 Hydrogen Hybrid Diesel $29.95
Time Remaining: 1d 9h 22m
Buy It Now for only: $29.95

MAP / MAF Sensor Enhancer - EFIE - HHO
MAP / MAF Sensor Enhancer - EFIE - HHO $45.00
Time Remaining: 26d 18h 38m
Buy It Now for only: $45.00

" TWO "-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
$119.95
Time Remaining: 3d 9h 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: 3d 6h 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: 3d 4h 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: 3d 2h 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 $8.22
Time Remaining: 19d 6h 22m
Buy It Now for only: $8.22

HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP
HHO ELECTRONICS FLASH CHIP SAVE FUEL GAS MPG EFIE MAP $102.45
Time Remaining: 14d 7h 55m
Buy It Now for only: $102.45

HHO Computer Chip Fuel Saver Efie enhancer
HHO Computer Chip  Fuel Saver Efie enhancer $90.00
Time Remaining: 20d 21h 43m
Buy It Now for only: $90.00

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