AMAZING 35% More MPG with HHO? Let’s find out! Help with high gas prices? 

That thumbnail is a work of art! Hahah!

I always love when a company makes a claim and Todd gets that liitle smirk and says, 'we're gonna test that!'

That video was literally worth $200.00. Thanks to you Todd, that money is still in my pocket.

This reminds me of when I was 16 and bought my first car in the 60's. I bought every gimmick known to man from the JC Whitney catalog. Each installation would boost HP by 15-10%. By all accounts I should have had a 500 HP 283 Chevy, but alas nothing ever changed. I can still hear my dad LHAO. It seems that the products now days are higher tech labelled, but work about as well as I remember. Thanks for doing this, it brought back some great memories. 🤭

Made my own hho unit years ago. Did get noticeable improvements in mileage. Difference…I installed a simple potentiometer on the dash wired into my map sensor. I was telling the computer that there was less air flow than was actually present, thereby causing the engine to call for less fuel. I adjusted based on need and could turn it way down on the interstate allowing for incredible fuel savings.

Before watching: It seems like one of those too good to be true things. After watching: it is too good to be true.

Can we all just take a moment and appreciate the time and effort this man and his team puts into these extensive tests. And this one in particular I'd say. Lots of hours in the making..

My friends and I used to make these in college, we had a Civic that we actually got up to 60 mph with. Everything was stock, except for the homemade HHO generator, BUT we did have to tune the ECU. We did learn that it makes a bigger difference with gasoline engines versus diesel engines. But we did get my 2004 diesel excursion up to 24 MPG. I swear by HHO, but you definitely have to tune the ecu to inject less fuel because the air is richer.

There are some issues you weren't aware of. The electrolyte works optimally at 165F. Ideally you want 'ported' vacuum to draw in the brown's gas. Drilled hole in the intake is not ported vacuum. Most cars no longer have ported vacuum. If you have a PVC valve and connect to that, the benefits are reversed (you want more of the gas when you accelerate not less and PVC vacuum is reverse of that). You want no more than 20 amp load. About 10amp is optimal so as not to place drag on the alternator. You want a brown's gas output of 1 liter per minute per liter of engine size. Additionally there are other things to trick the engine into utilizing the brown's gas effectively (deals with the upstream O2 sensor and IAT). Just slapping one on can improve things a bit up to about 20% increase in MPG without other modifications. I got double on the wife's car, but for a day. Her 4 cyl ran like a 6 cyl as far as power and acceleration went. Seems the computer didn't like the car getting that great of MPG and brought the mapping back into what the manufacturer's specs were. I even installed 3 lights too. Green meaning it is on and working. Yellow meant it was low on water. Red means pull yer arse over and see what the problem is (usually blown fuse or loose wire or something but could be worse). Car would work with any of the lights on. Had to keep resetting the computer every time I used the system. Finally removed it due to the hassle. The hydrogen in that will slowly remove built up carbon. When there is no free carbon available (takes a LONG time) it will pull carbon out of any steel parts (this is called Hydrogen embrittlement). Those plates are made from stainless steel. Best plates are made from Platinum. Plate spacing is roughly 1.1mm for great results. One hot plate and at least 5 or more neutral plates before the negative plate. Some use electronics to pulse the DC current to to cell around 44kHz. The water you must use has to be store bought distilled water. Other water has contaminants in it that reduce efficiency, eat plates, draw too much current, create too much heat, and create sludge in the system. Never use salt in a system like that. It creates Hydrogen chloride gas which can be explosive in sunlight. With the dry cell, you don't have to worry about hitting bumps and drawing the electrolyte into the engine like you do with a wet cell. Remember, there is no free ride with anything. It takes more energy to break the water molecules than you get out of it. But the advantage is more efficient combustion and resulting more power and better MPG if you keep your foot out of it. Just a few tidbits for everyone. Author - redo the test but drive the car for 1 hour SANELY in warm weather so the system gets to operating temperature. Then test it again. We saw you run that stop sign! lol

The only youtuber that hasn't sold his soul to marketing. edit: Thanks Patrick

one of the best you tubers to date, no bs, straight up content, science, and no money farming from companies. MAD respect

I appreciate your hard work. I trust no words on a box unless you’ve tested it

As always reliable consistent content! One of the few youtubers who truly accomplishes that!!!

He drilled holes in his air boxes to test this for us, that's dedication!

I just love his straight to the point with no 10min background story before he starts. Thank you

Amazed how you keep your composure Todd. I would have ended the video by walkiung that thing over to a trash can and tossing it in.

Great video. The fuel injection systems monitor the fuel exhaust via oxygen sensor. The hho will burn the fuel hotter, burning more fuel at combustion. As a result, the fuel oxygen percentage at the sensor will decrease and EFI will add more fuel to compensate reducing fuel efficiency. The only way an hho system can improve efficiency on an EFI engine would also require a modification to the oxygen sensor or EFI oxygen sensor settings. Hho will only work easily with engines with a carbonator. Cheers 🥂

"Hey Wilma, who's that nut that's been drag racing past our property a dozen times in a row?" Wilma: That's that lawnmower guy testing snake oil.

This is the only channel where I finish the whole video before heading to the comments.

I love your videos. When testing, you try to think of any aspect that could change the outcome. Very thorough testing. Great job!

Love the video Im a big fan. The biggest variable here is the fuel injected controller that is adding the fuel. The controller cannot see that there is another fuel (hydrogen) being added to the combustion chamber so it keeps running it's normal fuel trim. This means that selling these kits to people is just useless because they are not actually leaning out the gasoline mixture to make room for the HHO to work. If you tune the fuel injector controller (pcm) you can get some small gains in the V8 with the HHO. If you tune the generator or switch to a carb and lean out the gasoline and add HHO, you can get very good gains and maybe almost run 100% on HHO.

It may not have cleaned the plugs, but it sure did clean out your wallet.

I love the symbolism behind giving the closing responses in front of an empty table.

This is the way testing should be done. Thank you for this and all of the other great videos!

As always, amazed at how you even come up with the tests you do.

One of the last few gems of quality content on RU-vid nowadays

This man has wasted countless hours for our enjoyment. I will watch every single video. Always amazing.

Love the attention to detail that you do on your videos.

This is actually the best informative video I've seen. You're wasting NO time at all explaining the stuff your talking about, and you're not leaving out any important details. Great work man, you've earned yourself a subscription.

Since you drilled that hole in your air intake, I can’t help but suspect a “Which aftermarket cold air intake is best” video in the works lol

Parabéns pelo vídeo! A honestidade e a transparências dos seus vídeos deveriam ser modelos para todos os outros canais.

Great video and effort on testing the HHO generator! However, it looks like there might have been a crucial component missing in your setup - a fuel regulator. The main idea behind HHO systems is to supplement the traditional fuel, allowing your engine to operate on the lowest possible amount of it. A fuel regulator can help control the flow and ensure that the engine uses minimal gasoline or diesel, while benefiting from the higher octane level provided by the hydrogen. This adjustment could significantly improve your system's efficiency. Would love to see how this change impacts your results in future tests!

Speaking as a trained chemist, my brain hurts every time I hear "HHO" like it's some kind of mythic mantra. Well done on the debunking!

The level of tact in this video cannot be overstated.

Wanted to say thank you for all the information on product performance, you are amazing brother, learning so much about stuff I've always wanted to know.

I've run HHO systems before with mixed results. I was able to achieve a 20% millage improvement for highway driving only in a 96' 2.2L Subaru. The problem comes down to the EFI system which compensates the amount of fuel injected based off of the increase of O2 picked up by the 02 sensor, with the HHO, as well as the trouble of this effect with the variation of air/fuel mix to constant HHO output, produced by the fuel cell, unless you invest in specialized electronics which match the HHO production to air/fuel mix. For this reason in my experience with vehicles that work with HHO will only see gains after resetting the computer and maintaining a semi consistent air/fuel mix to HHO such as highway driving, once the vehicle is allowed to idle for extended periods the 02 sensor picks up the additional oxygen and registers a lean burn condition injecting more gas to make up for it and this is stored in the trim tab memory banks where by gains quickly disappear. Different vehicle manufacturers also apparently have different fuel management programs as well, I have tried two high quality installations on Ford with no effect unfortunately. There are two work arounds for this which are costly and complicate the installation. One is a smart PWM that controls the amount of HHO the cell produces to match the air/fuel ration but to function it must be spliced into the wiring harness of many of the engine sensors. The other are hydrogen separator cells which separate the hydrogen and oxygen releasing the oxygen and only adding the hydrogen to the combustion. In any case the computers trim tab memory should be cleared prior to running the system. IMHO the generator did not see fuel efficiency improvements because it is an EFI generator and was reading the added O2 as a lean condition which it compensated for by increasing the fuel injection beyond the actual amount needed for combustion. I would like to do another HHO installation on another vehicle and perhaps will post a video of it. Check my channel if your interested and perhaps you will find it a few months from now. Great video btw, with this information perhaps you could have seen different results.

This man is amazing. He cut a hole in his air intake for his vehicle, and generator, Much love to you Project Farm!!

The 300+ people that disliked the video bought this contraption.

My man i appreciate everything u do on this channel thank you

I've seen homemade versions of these in videos claiming great results and have considered making one more than a few times. Guess I'll save myself the trouble... Great info as always. Thanks!

I watch all the ads for ProjectFarm. One of the best RU-vidrs put there

Project Farm: "We obey the laws of thermodynamics in this house, mister!"

Thanks for the thorough research sir. It’s appreciated

Like everyone else here, I'm stunned with how much work and effort went into this experiment. Thank you.

3:05 "I'll go ahead and remove the plastic shavings from the intake so we don't try running the engine on plastic as well." EPIC!

I love your test on everything, very thorough.

Thank you for your effort and testing. You are very thorough and precise. Thanks again for the demo

I give props to you for somehow managing to maintain composure throughout this video.

I’m 76. Can’t remember how many ‘new inventions’ were advertised in my life time to improve your car’s performance. None of them worked. They were usually seen in Popular Mechanics, Mechanics Illustrated and Popular Science. Small ads in the back of the magazine.

You're the one guy on here when I do see him I know that I'm going to get a good honest review thank you for that.

thanks for this review , was wondering about that for past 5 yrs but was waiting for jusy this review

Dude - I'm really impressed. I've seen enough of your videos to know that you're plenty smart enough to know that you're testing a scam but you went ahead and gave it a more than fair test with no opinion at all even though I'm sure you had one. An excellent review. Good job!

PF constantly reinforces the old lesson your mom taught you. If it sounds too good to be true, it probably is.

Did you notice any difference in fuel economy on the suburban? Just curious cause the generator is carbureted and the suburban is fuel injected so maybe the suburban ECU will see if it running lean or rich and maybe adjust fuel. And I love your videos straight to the point!

Problem is AF mixture is set from the mas and the o2, these systems worked on old Beetles because we would manually adjust the carb to lean out the AF, simple procedure HHO off set carb lean till it sputters, turn on HHO to remove sputter, gently rich the mix until it runs smoothly and you get your MPG increase. Yes oil Temps were checked as was timing to prevent detonation issues. Modern engines see a cleaner burn as leaning out, so the ECU enriches the mix to offset and you get poor MPGs. These systems work better on Diesel as its a static rate of diesel going in versus a variable rate like modern gas engines. Good test but it was missing this variable.

thanks, Todd another great money saver and time and trouble. I am still amazed where you get all the testing tools.....awesome.

This pops up every time gas gets expensive, you'll see it on Craigslist and other selling apps.

I have been binge watching you for 3 days, and I am extremely impressed with your engineering skills, dedication, and attention to detail in your videos. To me, your reviews are as good as Consumer Reports reviews in the old days. I am really glad I found you.

Appreciate you making content like this.

Really learn a lot from this channel Easy, simple and well explaining

i remember a friend of mine around 2006 was trying to convince me that these kits would make our cars get better MPG. Snake oil never dies.

You’re the man for making all of these non-sponsored videos for us to see how products really perform! Keep up the good work boss 👍

I support you! thank you for your work. it is very interesting.

Great test. Very nicely carried out!

This channel has quickly turned into one of my favorites, great content no BS and great editing

"I'm going to install the HHO with zip ties cause as soon as this test is over I'm taking this crap off".

I learn a great deal watching your show. Thank you so much.

Excellent 👌 been wondering about these

Some say big name manufactures consult him first before making a product and that he once taught a giraffe to curtsy. All we know is, he's Project Farm.

I feel like his BS meter is so finely tuned that you can tell the outcome just by the way he says "we're gonna test that.."

Thanks for this detailed , very well explained expirment.

You use the scientific method so well on all your videos. I love it, thanks.

I remember before everyone had the availability of the internet at anytime, a lot of people automatically believed anything they heard on TV or in magazines. Thanks to your channel and a few others we now see the real results of these products.

Project Farm's thumbnail game has truly ascended to new heights

Very innovative way to test the effectivness of 'HHO" - it indeed clarifies lots of doubts and misunderstandings, thank you for a detailed vid

THANK YOU SO MUCH FOR MAKING THIS VIDEO AND DOING ALL THIS FOR US MUCH APPRECIATED

Would love to see electric pressure washers put to the test! This is the only channel that I will give a like before the intro is even over. Awesome work 👏

I'm a young mechanic and I have to say I'm extremely thankful to see you test some of these things. I learn a lot which I then apply to my work. Keep it up man

Thank you so much for making this video

Love Your Channel! God Bless You Bro!

Just wanted to thank you again for doing the HVAC filter video, I upgraded to a merv 14 filter and I swear I haven't sneezed at home since

You're one of the few youtubers i really appreciate. No bs, straight to the chase, superb content. I feel warm and fuzzy on this side of youtube bc it reminds me of how youtube felt a long time ago! Thanks for being so unbiased and transparent as to throughly showcase exactly how you evaluate these gizmos, so that if in doubt we can go ahead and test for ourselves. You seem like the kinda fella I'd chug a cold one with. Rock on!

thanks for making this. well done

Well done video! I tried this some years ago on a 61 pickup..zero gain in mpg

If you don't already have them, you need to make a t-shirt that says: Project Farm "We're gonna test that!" :D

Great job as usual. You are the new Myth Buster. I didn't even know these existed. I will keep it that way now. Thanks!

Thanks for your channel !!

I appreciate you doing this testing because there's a lot of people posting videos to tiktok and Facebook about these and how they get amazing fuel mileage but anybody with any amount of technical background knows it's not going to do anything.

So what we have learned here is that Mr. Project Farm could have obtained the same results by just simply lighting his $200+ dollars on fire.

Next time make sure you place a pyramid on the device and cleanse away the bad MPGs with healing crystals

Excellent approach & breef

Bro I love the tests u do keep it up bud

Thx for the video and information.

I knew what the results would be, but I still watched and appreciate the work. Thanks Todd!

As a physicist, I can tell you exactly why this didn’t work: energy conservation. If you generated the HHO with external power, you probably would get that increase in efficiency, at least with sufficient flow rate. But you’re using energy to generate the HHO, and the absolute best you can hope for is to get that same energy back, which you won’t because every step of conversion incurs losses.

Great job on the wiring

very well done test

I can really appreciate Project Farm's dedication toward controlled testing, going the extra step by not allowing companies to muddy the waters by sending him free products.

Ah, good old Brown's gas. I still remember installing a system in my truck around '05. Gas was about $4/gal and there was an e-book circulating called: "Run your car on water." It described a method of making HHO cells in mason jars, using stainless steel wires. I mounted a few in front of my radiator and also wired a switch inside the cabin. You also needed a potentiometer to dial the signal from the airflow sensor in the air intake. This was to trick the computer into mixing in less gas, the theory being that the HHO would replace the gas. Bottom line is my mpg went from 22-23 to 23-24, roughly a 1 mpg or

I dig the research you do. Way to call out the BS garbage products! Thanks man!