Toyota Corolla with HHO, MPG's went down

[volsfan]

I'm putting 1 lpm of HHO in to my 2006 Toyota Corolla. I went from 42 mpg to 37 mpg. The car is not running hot, no lights on the dash have come on! Any thoughts?

Thanks,
VolsFan

[cabrera]

I'm putting 1 lpm of HHO in to my 2006 Toyota Corolla. I went from 42 mpg to 37 mpg. The car is not running hot, no lights on the dash have come on! Any thoughts?

Thanks,
VolsFan

From what I have seen, you need to be able to adjust your MAF. You may also need to add 02 extenders on the o2 sensors. This is the problem in basic terms. Your car has an ECU (computer) with a program in it that says the car must run to these perameters. When introducing HHO the sensors send the info to the ECU saying there is a lean burn condition, add more fuel. The ECU responds and more fuel is added thus negating any MPG increase. Using a MAP/MAF enhancer will help.

[volsfan]

I'm going to install my O2 extenders tonight!!!

[volsfan]

I put the top O2 extender in last night. With NO HHO I went from 42 to 45 MPG's!!! 7% inprovement!!! I have more power, I was murging from I81 to I26 going 60 mph I punched it and spun the tires! WOW!! I have to put a heaver wire on my HHO Gen. I use 14 ga and it melted the + lead. I hope to have everything working this weekend.

VolsFan!!!

[cabrera]

I put the top O2 extender in last night. With NO HHO I went from 42 to 45 MPG's!!! 7% inprovement!!! I have more power, I was murging from I81 to I26 going 60 mph I punched it and spun the tires! WOW!! I have to put a heaver wire on my HHO Gen. I use 14 ga and it melted the + lead. I hope to have everything working this weekend.

VolsFan!!!

I use 6 guage, and I'm thinking of going to a lower guage. You may also consider a PWM to control the voltage to the cell

[Marlon]

If you really want to get the most mpg possible get a digital EFIE.
If your Toyota has a VVTI engine you should keep the EFIE settings low and DO NOT adjust the MAF.

[RustyLugNut]

The intricacies of the modern fuel/emissions system is the big stumbling block to the home experimenter. It surprises me that no one has approached this problem by using a relatively simple carbureted vehicle to establish how hho works, and then extrapolating the results to simply injected vehicles, and finally, current state of the art.

[cabrera]

It surprises me that no one has approached this problem by using a relatively simple carbureted vehicle to establish how hho works, and then extrapolating the results to simply injected vehicles, and finally, current state of the art.

That what I did first. My first HHO setup was in a 1974 VW beetle. Wet cell, bubbler flashback protector & not much else. She went from a consistent 24 MPG to 33 MPG. Cabrurated cars are fairly simple. Attach the HHO to a vacuum port on the manifold below the carb & you're golden.

The ECU on modern cars are the P.I.T.A. that fights you every step of the way. Overcoming the programming to compensate for the HHO is the challenge. HHO works, its an additive, not a solitary fuel....yet

[RustyLugNut]

So, how does it work? What did you find out from your simple experimental setup on the VW?

Those principles are universal for internal combustion engines, so the extrapolation to fuel injected vehicles should be clear.

[cabrera]

So, how does it work? What did you find out from your simple experimental setup on the VW?

Those principles are universal for internal combustion engines, so the extrapolation to fuel injected vehicles should be clear.

HHO added to the VW had a 2 fold effect:

1. HHO allows the gasoline to fully burn, thus there are no unburned fuel out of your tailpipe.
2. Because of the above carbon deposits are reduced for the engine. This sometime skews the results of HHO as a cleaner engine will perform better.

Originally, the VW was getting just over 38MPG, but after a week it dropped to 33 mpg. Once the engine cleaned up it leveled off. The mileage remained constant for the next 6 months. When I removed the unit, the VW did about 26mpg w/o HHO, which is what that car did when new.

These 2 factors remain constant in FI engine, the problem is the ECU in newer cars compensates for the added HHO. It reads it as a lean burn condition since the exhaust gas has a higher concentration of oxygen. To correct this the ECU will dump more fuel int the engine negating any MPG increase. Therefore electronics must be added to compensate for the ECU's inteference.