What is an EFIE?
In the past, fuel savers would not work when applied to fuel injection because fuel injection systems are actually designed to prevent efficient combustion! Increasing the combustion efficiency of an engine increases the exhaust oxygen percentage. Most fuel injection engines use an oxygen sensor to infer the air/fuel ratio of the engine, the increased oxygen content in the exhaust is 'read' by the computer to be a lean mixture in the engine. The computer then adds extra fuel to bring the pollution back to 'normal', so it can re-burn the wasted fuel again in the catalytic converter, or hide the smelly rich emission, to put it bluntly.
The EFI device helped run your engine at 18/1 , rather than the regular stoichiometric mixture of 14.7/1. This problem led to the development of the Electronic Fuel Injection Enhancer (EFIE, pronounced Ee-Fy).
The EFIE allows you to apply an offset to the voltage coming from the oxygen sensor, so your vehicle's computer is completely unaware that the oxygen content of the exhaust has increased. We sell ready-to-fit complete and tested device. Easy to install only 4 wires to hook up. Your Fuel injection system stays original.
The new Digital Narrow Band EFIE was recently released. With this release we have ushered in a new era in oxygen sensor enhancement. With this device, you can make your vehicle much leaner than with previous EFIE designs. It is also extremely stable despite changes in temperature. From -40C to 125C the variation is negligible (1/2 of 1% max). While other EFIEs have trouble working with old, tired oxygen sensors, this model will work with any sensor that is still able to produce voltage (note, if you're sensors are worn out, we still recommend you replace them for optimum performance).
Our new sensor operates differently from any current EFIE that we are aware of. The purpose of this article is to describe how it works, and why we call it a "Digital" EFIE.
The EFIs fitted to cars are able to tell us if the air/fuel ratio is either rich or lean, but it doesn't tell us how rich or how lean the mix is.
Up until relatively recently, all oxygen sensors were of a type known as narrow band sensors. The reason these sensors are called "narrow band" is because they are only able to tell us if the air/fuel ratio is above or below a single known amount or a single narrow range. It can tell us that the mix is either rich or lean, but it doesn't tell us how rich or how lean the mix is.
For the majority of these sensors, we use with Delux Dual EFIEs. and these sensors make up the majority of the sensors in America, but for the Japanese cars made after 1997, they will need Wide Band EFIEs.
Wide band oxygen sensors are also called wide range oxygen sensors, air fuel ratio (AFR) sensors, or just A/F sensors. They are called "wide band" sensors due to the fact that unlike narrow band sensors, they are not only able to tell the computer if the air/fuel mix is rich or lean, but how rich or how lean it is.
These sensors are new, and weren't used in any vehicles prior to 1997. Starting in about 1999, nearly all Toyota models started using them. However, other than various Japanese and German makes, most automobile manufacturers have yet to adopt them.
The Original EFIE is for Narrow band O2 sensors, most cars 92-98, & later models Ford , GMC, use Wide Band sensors : BMW, Merecedes, some Chrysler, some Toyota 97 & newer use Narrow Band O2 sensors. Wide band O2 sensors, usually have more than 3 wires coming out of the O2 sensor, but not all, check your Clymer manual or All Data.
Don't Know What Type Oxygen Sensors You Have?
We now offer a service in which you can get the information you need about your oxygen sensors. Just fill out the Sensor Request Form, and submit it. We will get back to you with the number and type of oxygen sensors you have.
On average it works out like this; Japanese cars made after 1997 use Wideband sensors and most other cars use Narrowband sensors, these include cars from Europe, USA and Australia.
NEW Mileage Chip
This dynamic NEW mileage chip has been engineered specifically for use on vehicles using HHO Generators to save even more fuel and increase power response!
- Use Instead of an EFIE
- Eliminates the need for any MAF/MAP controllers
- No more searching/cutting wires on O2 sensors
- EASY to hook up - comes with quick conectors
- No adjustments needed, automatically sets itself
- No Multi-meter needed - nothing to read or adjust
- Does not touch or modify any existing sensors
- Attaches to wiring harness in back of OBD2 port.
When I heard of these I figured it was a fifty/fifty chance they worked like the manufacturer was telling me they would - in this business you have to be skeptical because everything is so new.
A chip was sent to a tester in Vancouver, BC, to try out, as he had already been getting spectacular results with just the EFIE.
Bottom line: With just the EFIE and our Dynamic Dual 772 HHO Generator, he went from 22 mpg to 36.6 mpg. By switching out the mileage chip for the EFIE: He went from 22 mpg to almost 41 mpg, an 85% increase in mileage, and an extra 4 mpg for doing nothing but hooking up the mileage chip - that's FREE gas!
Another nice side effect: He reported that the car also seemed to have more power as well! So, more POWER, more Mileage, AND easier to hook up - see why we are recommending these?
See the page on the new Chip.
