I have been running HHO on my 1999 2.5lt Subaru Heritage for about 18 months now. I have built four different designs now in an effort to get the best results.

Currently I am constructing a new dry cell being to 2 x 16 plate dry cells in one that will fit behind the front bumper.

Unit used for the past 12 months is a small cylinder based plate, similar to a smack gen1 unit on a little smaller so that is fits.

I run a JayCar digital fuel Controller unit, it is a signal interceptor that can either add or subtract volts depending on the required. i use that as an EFIE on the O2 sensor.

I have a voltage regulator on the VREF for the intake temp set to 4.75 volts. I also ran a digital Fuel Controller on the MAP sensor but the results did not out way the behaviour change of the car.

Producing less than 0.75 litres per minutes of HHO I have achieved a best result of 7.8/100 ( litres/100 kilometers)

With a yearly average over 50,000 kilometers or around 8.3/100 in dual city country. With out the HHO and just the electronics the car went from 9.2 to 8.5 average of the last 20,000k’s.

Yes a do a lot of miles in the old girl, averaging 55 thousand k’s per year to and from work.

I will let you know how the new CELL goes, I hope to have it in and running over the next 4 weeks and results posted to my we site in the future factoryelement.com. at this stage I don’t have any HHO projects up there.

Thanks heaps,

John Velo
Factory Element

Also, I was wondering if any of you have tried the O2 spacers and was wondering if the results from these are anywhere comparable to the sensor remap…if they work at all.

Matt

The O2 remap is pretty important.

We are going to put the system on the passenger side inner fender just behind the bumper. And then have a tube stick out to add water.

This will keep it close to the intake.

I still haven’t decided on the canister yet but I am leaning towards a hollowed chrome steel hydraulic ram off of a large piece of equipment. Should be able to thread the end and build a cap for service and it should be bullet proof.

Justin

I am working on getting an HHO system in my 95 legacy. I think I am going to install without the 02 remap to begin with to see what kind of results I can achieve.

Space is a problem I have run into on my car. There is ample room in front of the battery, but I don’t want it to be so far away from the air intake. Let me know if you end up starting on a car with abs.

I found some small nalgene style bottles, 500 ml, that I am considering to make my generator out of. I would put two in a series if I go that route.

Matt

I plan on the O2 remap.

But here is the thing, as far as the energy used that is being missed. There are things that can be done to the vehicles electrical system to decrease amperage draw to copensate for the amperage draw from the HHO generator. If I have a 85 amp system and I install led bulbs that use less current, only run blower motor speeds 1 to 3, Install smaller wattage head lamp bulbs, etc. I wont be adding enough electrial draw to affect the fuel economy of the Subaru with the HHO generator running. I have already installed the Led bulbs, less wattage headlamp bulbs, and have measured the total amperage draw before and after and have decreased the draw by over 15 amps.

This is what drew me towards a boost system. I know how to shave amperage to save electrical load.

I have read all of the theory about the amount of energy used versus the energy produced. But by increasing economy with HHO with out increasing overall petro fuel consumption is obtainable in my opinion. But time will tell.

Thanks for your Interest, and keep me posted on your Legacy project as well

Justin

Igor ( at ) chouck ( dot ) com