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.
 Smallest MAF MAP enhancer Hydrogen HHO DEMSE EFIE o2 US $14.99 |
 Fuel Saver Flash Chip for HHO No EFIE or MAP Needed US $144.95 |
 Water4gas Tiny MAP enhancer Hydrogen HHO DEMSE EFIE o2 US $13.99 |
 HHO EFIE O2 CONTROLLER US $20.00 |
 Fuel Saver Flash Chip EFIE MAP MAF HHO Dry Cell Volo US $149.95 |
 HHO Dual Edge MAP MAF Sensor Enhancer Water4Gas EFIE US $25.99 |
 Dual Edge MAP MAF Sensor Enhancer HHO Water4Gas EFIE US $29.99 |
 Deluxe Dual EFIE Enhancer HHO water4gas O2 sensor US $80.00 |
 Dual Wide Band AFR EFIE HHO water4gas O2 hydrogen US $60.00 |
 Dual Narrow Band EFIE for HHO Hydrogen Generators US $25.00 |
 Digital Dual EFIE Enhancer O2 adjuster HHO Hydrogen US $80.00 |
 HHO Hydrogen Maf Map Sensor Enhancer Twin Efie US $23.47 |
