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: 3d 17h 14m

MAGNUM DIGITAL EFIE TITANIA TITANIUM O2 OXYGEN SENSOR ENHANCER ADJUSTER HHO CHIP
MAGNUM DIGITAL EFIE TITANIA TITANIUM O2 OXYGEN SENSOR ENHANCER ADJUSTER HHO CHIP $60.00
Time Remaining: 1d 54m
Buy It Now for only: $60.00

NEW HHO Computer Performance Chip Fuel Saver Efie Enhancer MAP MPG HP Hydrogen
NEW HHO Computer Performance Chip Fuel Saver Efie Enhancer MAP MPG HP Hydrogen $90.00
Time Remaining: 23d 14h 10m
Buy It Now for only: $90.00

Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF
Digital Controller with CCPWM for HHO Kit . PWM , EFIE , IAT , MAP / MAF $255.00
Time Remaining: 9d 6h 19m
Buy It Now for only: $255.00

" TWO "-HHO-HYDROGEN-DRY-CELL-GENERATORS-MODEL 4.5 DIY KIT-EFIE-CC PWM Available
$99.95
Time Remaining: 13d 13m
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 21h 13m
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 19h 13m
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 17h 13m
Buy It Now for only: $99.95

DC7000 HHO Dry Cell Kit Complete w/ PWM, Quad NB EFIE, Educational Hobby Edition
DC7000 HHO Dry Cell Kit Complete w/ PWM, Quad NB EFIE, Educational Hobby Edition $674.95
Time Remaining: 13d 16h 10m
Buy It Now for only: $674.95

AMP GAUGE 30A 12 VOLT HHO / EFIE /30A PWM. FINE CALIBRATIONS
AMP GAUGE 30A  12 VOLT  HHO  / EFIE /30A  PWM. FINE CALIBRATIONS $9.43
Time Remaining: 28d 21h 33m
Buy It Now for only: $9.43

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