Comments on: Electronic Fuel Injection Enhancers (EFIE) and HHO

By: Johney Deen

Johney Deen — Sat, 16 May 2009 20:13:33 +0000

Is this been checked for diesel? engines with no sparks…

By: HELP

HELP — Wed, 15 Apr 2009 03:43:07 +0000

I have a Saturn 2000 s car. I can not seem to get the o2 enhancer to do a thing. Reading some of these posts it looks like I’m s- out of luck. I’ve spliced into the green wire, is that correct?

By: gregg

gregg — Tue, 17 Mar 2009 00:30:18 +0000

no, its for tricking the 02sensor, nothing to do with cat or removing it. and is conected to the 02.

By: D.L

D.L — Mon, 16 Mar 2009 20:12:24 +0000

THIS EFIE THING …. IS IT FOR WHEN U REMOVE THE CAT AN IT REPLACES THE O2 SENSOR SO THE ENGINE LITE WON’T COME ON ? KINDA LIKE AN O2 SENSOR OVERRIDE TYPE DEAL ?

By: gregg

gregg — Sat, 07 Mar 2009 15:06:20 +0000

im not sure this will work for you but through trial and error, (ive written to many my struggle with milage using map enhancer) it looks like you dont turn lean knob as much as you think because from what ive read if you do it too much it does somthing called open or close loop, i forget which one but when i turned knob as much as i could before starting to stutter i got less milage. i currently have just turned my knob back and have noticed more power and im at 77 miles so far and am not reached the full mark on my tank, which looks to mean im getting more milage. i’ll post again later to let know results

By: gregg

gregg — Mon, 02 Mar 2009 20:23:27 +0000

dont know none has answered or helped me yet

By: chris

chris — Fri, 27 Feb 2009 16:52:00 +0000

ive just installed hho kit in my 98 nissan altima. seems to work fine but he exhaust is dumping unburnt fuel and i can smell it coming out. i tried installing the EFIE on the Map sensor but nothing happens. has anuone encountered this problem or knows what to do?

By: Tommy

Tommy — Wed, 25 Feb 2009 02:15:33 +0000

I have a 1997 H D Ford F250 - 460 gas engine -auto-trans - 2 wheel drive. Want to add HHO ket (by the way I used HHO in my race car back in the 1970’s. However, I lost on keeping up with antything to do with motors etc., over the years) - Is there any way to get set up information on a EFIE unit - how to adjust - what other eqyuipment is needed etc?

By: gregg

gregg — Sun, 22 Feb 2009 19:35:36 +0000

i have 3 2quart generators that seem to put a lot of hho. my car a 4cyl 94grand amm with the map sensor ehancer is getting 28-30mpg, mostly in the 28 range around town. sensor is set on the 2nd quarter setting, without the map sensor on i get 23-23mpg. my problem is i know im making more hho than when i had 3 1quart system, i got same milage but when placing tube from generators into water and veiwing the hho output my 3 2quart unit puts out 3times the hho and thats a low estimate. will a efei help get more milage and does anyone know who makes one that will work on my 94. also my 02 sensor is right on the exhaust manifold coming from the head. oh yey my car is rated for 23 city 28 hwy. on the hwy i got 44.5mpg with cruise set at 65mph and that was with the 3 1quart units,so i havent got to try the new 3 2quart generators systen yet but at the rate of hho produced i should get awesome mpg anyone one that can help me i would be much apprieciated these 2quart systems ive made draw like 5-6amps and produce lots gas and the 1quart systems i used blew fuses would heat up lose water from evaporation etc where this new system ive made is not hot to the touch and makes a lot more gas.

By: Mike Kehrli

Mike Kehrli — Thu, 22 Jan 2009 19:09:31 +0000

Hi guys,

I can shed some light on some of the questions brought up above:

1) 4-wire sensors: There are 2 types of 4 wire sensors. Narrow band sensors most often use 4 wires. Narrow band sensors are the type that work with an EFIE, and are the most common o2 sensor at this time. There are however a new type of sensor called a wide band sensor. Wide bands come in 4 and 5 wire types. An EFIE will work on a 5-wire wide band and will not work on a 4-wire wide band. This is probably what you heard. At fuelsaver-mpg.com we have an EFIE made specifically for wide band sensors that will work with either 4 or 5 wire wide band sensors.

2) Bypassing the sensors. Some folks have asked if you can pull the fuse or otherwise disable the sensors and then not need a sensor enhancer (such as an EFIE or MAP enhancer). This actually won’t work. The easiest way to disable an EFIE (for instance) is to just cut it’s signal wire. Other folks have put a fixed voltage on this wire that is intended to “satisfy” the computer. Neither works because the ECUs are programmed to expect certain responses from the sensor, and when they don’t see them, they will ignore them. However, when this happens they go into a safe mode, and this means running the fuel mix very rich. This will cause fuel mileage to get worse than when you started, even when adding HHO.

3) There are some different types of narrow band sensors, and they have slightly different characteristics. The ECU is programmed to respond correctly for the type of sensor installed. However, almost all narrow band sensors are of the same type, and operate in the 0-1 volt range in the same way.

However the reason you can’t just put a fixed voltage to the ECU and have it work is that the ECU is looking for transitions where the voltage goes up above and down below the .45 volt threshhold. .45 volts is theoretically the voltage for the correct air/fuel ratio. But because it will never be this exact amount, it is always changing above and below this voltage. If the ECU doesn’t see these transitions, it knows the sensor is no good, and ignores it. This is always bad in terms of gas mileage.

I hope some of these answers helped.