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- เผยแพร่เมื่อ 7 ก.พ. 2025
- VW TDI Diesel Gets 120 MPG on one Gal of Diesel with CNG blend!!
I will give the math up front. 2001 VW TDI 129 K using my new CNG blend test system.
Round trip 90 % Highway 75-80 MPH.
60 Miles round trip used .51 Gal of Diesel and 1.2 GAL (GGE) of CNG yes I have the slips.
That is a 60% blend of CNG it has very smooth power to boot.
The EGT never went over 990F on long uphill pulls.
Using this system should give you a 70% reduce in fuel cost per mile traveled
I give up some trunk space for a CNG tank on a Jetta ½ the trunk on this TDI I use 2 small test tank that fit in the spare tire space 1.5 GAL filled.
For the front end kit I see it in the $500 range
Used tanks can be found from $100 to $1000.
You can view the how to do at wwww.CNGVW.wordpress.com
I will be selling this turn key kit on my Ebay store for the front end kit for $550.
Bob Mann
781-588-3968
Holy Crap, I could hear the differen.ce , the whole sound was better with CNG! Great idea!
Get a tank of MagneGas. Dealer list could be found at MagneGas Corp located in Florida. Many distributers of this renewable gas that has 60% hydrogen. It can be used in place of natural gas without any modifications to a natural gas vehicle. Currently MagneGas is being used as a replacement to acetylene for welding. It cuts metal 38% faster than acetylene. It combust at a flame temperature of 10,500 F.
I’ll bet the government never expected a Lone Ranger to be this powerful. I’ll bet.
If your going to run. This kit make sure you computer is tuned for it mine kerps going into limp mode due to extra power. Also engine hearts up more so use better cooling option. Great for those cold days engine heats up faster
I like the simplicity of that. I don't have a diesel engine though and I don't drive far. User Smartscarecrow is always looking for guests to do presentations on his Thursday weekly radio show. His listeners would be interested. I sent your name to him a few weeks ago.
LPG gas conversion so much better since it has a higher BTU value
*US government disliked that*
C. M. Oil lobby
Of course they did... And they knew about it 40yrs ago... But they didn't tell you now did they?
You can use 100% natural gas on a petro engine. The blend is required for diesel engines that do not have spark plugs...
Wow, it seems like the car is pulling much further in to the rev range! In you have natural gas in your house than you can just buy a compressor and fill up at home!
I'd like to see the tank in the back
dyno it and post the stats! it would be interesting to see
Or don't because it's all bullshit...
@@koitorob I've yet to see one mixed LPG/diesel car on the dino. I've come to the same conclusion as you. LPG isn't some magic super fuel.
He probably gain about 50hp when LPG is on.
When you combine the price of the diesel and the propane that you burn what does it break down to cents per mile? 120 miles per gallon on diesel sounds amazing but that’s not a Realistic cost per mile without calculating the cost of the propane also. I’m sure it’s still very good. But I would like to see more accurate breakdown please.
I Dido the dino stats. Proof is in the pudding! Plus i'ed love to see the difference in power, other than your foot when you turn it on.
could you tell me whats the ratio of cng consumption with that to diesel
like for example
if you are using 1 gallon of diesel how much is cng being used
So you used .5 gallon of diesel which cost about $1.50 and 1.5 gallon of cng which cost how much? About $2. $3.5 ish total got you 120 miles. If that's the math then that's really amazing.
Is there any place where you can get a complete kit or parts list. I looked on Google for CNG VW and could not find a website. Whey don't you put a link in the description box.
Thanks.
Good kit for 7.3
I don't have any idea as to temperature resistance of a glow plug, however the idea I do have is that the lead if a glow plug has any in it will make it less resistant to high temperatures. Curious about this 2002 vw tdi 129 Jetta's glow plug upkeepness!
Wow I wanna install this system in my pickup truck.cool
Did you
Strange that you don't have any links
Simple question why not use propane? Easier to come by and safer no high pressure tank.
propane goes with gasoline better than methane bc it have lower auto-ignition at 470C
while methane is 537C
diesel compression makes air reach up to 750C so, it can make both propane and methane auto-ignite
while gasoline pre-ignition compression only reach 350C so not even enough to auto-ignite propane, but propoane have a low flash-point so that's ok
propane can be used in diesel and there are kits for it, but they are mostly for adding power, and can't be used to totaly replace diesel oil, bc some small qantities of it as still needed to keep running (the reason for that still escapes me, is it bc auto-ignition happens earlier than without oil? and thus will cause knock and unefficiencies? )
Ps that stuff the electronic computer temp reader. ...WOW!
so how's the emmission test going on this car? still passing it?
Impressive stuff.
When I get my next TDI I want to get either a cng or propane system like this. Do you do propane systems too?
Hey Bob Love your work i'm mezzmerized by it I would like to compress NG at home, You said that a scuba pump should work just fine and thats what you do. I am intrested in how you have done this. Very inportantly the safety aspects of doing this. There is a product on the market used for Paintball recharging called the ShoeBox compressor and will compress to 4500 PSI
is this product able to compress NG at home? it's only $650.00
Outstanding Bob.You sir need to take over and run the filthy swine at the EPA! Wow any mods for a Dodge Cummings 1993? TY73s
cool thing.. where to buy the stuff needed for conversion
Thx very much for your video. I appreciate it!
where do you buy cng in Vancouver Canada its not available everywhere the tanks are heavy and your buying 2 fuels now. the added power would be nice. do you have a gas leak detector installed since cng is odorless
Can you show some videos of your clients cars, that are getting that kind of increase in mpg, using this CNG kit?
is the cng fitting to diesel vehicles illegal
I don't have any clue in my country though
Hi there, greta video.
Does this cut the emissions too?
I'm curious as well also does it pass emissions?
Are you still offering these kits?? Could i adapt one to run on my 1980 mercedes 300sd??
THIS IS BOB MANN
I've driven a petrol (gasoline) and LPG car before. You drive it in either setting, not mixed like diesel.
So your injecting CNG before the turbo... Does the word FlashPoint mean anything to you? I have a similar system with more compact parts and electronic solenoids pared with a vacuum control for safety using a NOS single jet fogger in the EGR valve. If I'm making boost it cuts back on CNG, no throttle the electronic cuts. At cruise is the only time it's active.
what kit do you have
Does your system get better MPG?
Where does one get or make a kit for a TDI? What are all the components? Does this hurt the engine at all physically at all?
Nope, source online and nope, provides a complete burn of the diesel as it is atomically smaller...
have you tried pairing this setup with a water methal spray kit? Also wouldn't it be better to spay the gas in to the intake manifold instead of the intake tube?
Water methanol works well but so little is required on these small engines that I had to run a regulator and divert 60% of my pump output back to my reservoir... It does give a bit if power but the cng does more and requires nothing else...
@@darrentylor5473 thank you for the reply and the info
@@darrentylor5473 would you happen to have the link where this is being sold on ebay?
Is this safe in an accident and will it pass inspection?
Does it have to be a mk4 (99.5 to 05.5)?
Will this work with a 2015 golf tdi
Hey Bob, can you do anything for my 1969 VW Squareback, Type III first year automatic? She has a fuel-injection gasoline engine.
Tanks that I use were good for 3000 PSI system is good for 3600 PSI
Hello
This works on common rail also?
Did you have to retune the ECU and how does the stock turbo and injectors handle the 100hp
gain?
For the math it was done like a lab test not useing the car computer and that year did not have one in the dash.
This has been done on big trucks for years .
The point is you are using less diesel at a cost $4.50 a GAL.
Were some CNG at a street pump can be as low as 90 cents a GGE and with home fueling it is 60 cents a GGE.
Bob Mann
Would I see the same fuel mileage improvements in a gasoline engine?
The car will run only on cng or lpg only direct injected run on both but get a lot worse mpg
I have an 03 Pontiac Aztek with an 3400 sfi
This car Reaches 97 MPG ( from Factory) it has Fuel Tank Range of 1200 Miles
Top Speed is 120 MPH ( engine is Supercharged) ( Banned in the U.S)
static.autoexpress.co.uk/sites/autoexpressuk/files/peugeot-308sw_front-static.jpg
Hello every one I have just finished up my new Duel Fuel CNG injection system on my 2002 ALH automatic Jetta .
I will be doing a new VID and add a few pages to my site www.DRVOLKS.com on the how to install.
This new system is by far one of the best. I can dial in a 50HP to a 100HP gain just by changing tested run files.
I will be dynoing it soon and will be trying to do a 200MPG on diesel test run. So please watch for my updates.
Bob Mann
+Bob Mann Will the cng kit work on gasoline cars
What PSI is the CNG at? 3600? 3000?
How much does it cost to do this to a jetta
Does cng help eliminate soot
This seems like a good idea, but a bad system. It should be on some kind of progressive controller, so you can run 30% 70% or whatever blend you want, and so it shuts off at idle. In my opinion it would need a bigger turbo since more fuel is being added. That's the proper way to keep EGT's down.
More fuel isn't being added ffs it's just a blend of fuel.
what's the cost per mile of the cng and diesel?...(60mpg @ $4 pg would be 6cents per mile)
Can you do this with a Chevy Cruze Diesel
1986 VW Jetta turbo diesel (619)250-057six
is it bcos the cng supply I am giving is lesser then needed?
Could you do the same thing with a gas engine
YES WITH CNG... iM SUPRISED THIS IS NOT PROPANE
Met a Hippie at the diesel pump. He has a VW truck...whatever the hell it was...he said he was getting 100 mpg....we smoked a bowl...then he left...permanently. ..I have some stock in oil...some👹
hello mr bob
I tried the cng on diesel 2.5 turbo
its a Toyota make
I found that the engine runs superb,,with lots of power and pickup
my only issue is I find the engine knowing at speeds above 120kmh
could u pls tell me what can be the reason
I have fitted the unit similar to what u have done
I don't have a EGT yet
pls reply
rgds paul
Paulson Good job. You should use a EGT I think you are pulling to much CNG because of the higher Vacuum in the intake track witch could be come a run away engine. BOOM .
To find the right ECT for your engine install the ECT then run it on diesel only drive it very hard record the highest reading. I would only go 200-300 above that number with CNG to play it safe.
with a build TDI 1600F is about the limit.
Bob Mann
Bob Mann thanks for the reply bob
that's was wounderfull
so the main thing I have to watch out is for the EGT not above 1000f
or max of 300 from normal diesel,
at high speed how do I reduce the suction,or is there anyother way out to reduce the knocking,which would eventually damage the engine
Hello for the TDI systems the one I show here is a easy to install and just work right every time. so any diesel can use CNG . For the gasoline system look at my other VIDs.
Bob Mann
view my new site www.DRVOLKS.com
If you are talking brown gas you would need to build a system the size of a truck to run a Smart car right.
Bob Mann
Bob Mann HHO is just water that's been turned into hydrogen/hydrogen/oxygen, another words the gas which makes up water, by pushing the atoms apart with electricity. I highly doubt it would be able to compete with this system you install. The only way it could compete is if someone had their own hho generator, and a safe way to store it, both are highly unlikely.
kit still for sale on ebay
I guess I am having a problem with the math. .51 gal of diesel + 1.2 gal of CNG is a total of 1.71 gal of fuel over a 60 mile trip. That is roughly 35 mpg, not really fantastic. I guess if you just include the diesel used then you get the "120 mpg of diesel" but you also used another fuel and in reality no where near 120 mpg. What is the actual cost savings?
I guess you cant do the math. the point is by using a Duel Fuel system you cut your cost per mile traveled in half.
Here in so.cali, the cost cng is ~$1.99 - $3. Assuming $1.99 the cost of that 60mile trip would be $2.40 (cng) + $2 (diesel) = $4.40. Which is still not bad.. but that 2002 jette tdi 5spd does 49mpg according to google which comes out to $4.90 for 60miles @ $4 per gallon for just diesel. $4.40 with cng and $4.90 with just diesel for that 60 mile trip. Correct me if my math is wrong but thats hardly half, but then again its only for socal prices
So to answer the op's question, you save 50cents for that 60mile round trip by using cng, this is again according to prices here in los angeles, but if your cng prices hover in the $2 range you're saving 50 cents. This is of course varied depending on the vehicle
i find the title miselading
+sploofmonkey these prices were before the leak.. i have no idea what the prices are now. If and thats a big IF.. you get $1/gal then it may be worth it.. I think you'll save about $8-15 per fill up depending on how many miles you get per tank.
+sploofmonkey well he is getting 120mpg on diesel because he used .51g of diesel to get 60 miles. But you gotta remember he also used 1.2gal of cng along with it. When you add up the prices you do not save 70%.. at the time i calculated for california you're saving around 10%. Its misleading, because if i give you an analogy i could say i got 100mpg on this car because i drove 60 miles and push it the rest 40 miles, yah i got 100miles from 1 gal but i also pushed it lol.
keokio7
not to mention the price of the conversion is more than that jetta is worth!!! lol
i would like to purchase this kit . any contact information?
i wonder what kind of fuel milage you could get on a semi.
Damon Waring Cummins and Newport Innovation came out with a LPG engine but injects Diesel to ignite it. The name of the book is Medium /heavy duty trucks by Seann Bennett
Mark Armstrong thanks for the info
does any one know if I could do within with a 2.0 2005 tdi Passat engine?
Does this CNG + Diesel kit work on diesel powered pickup trucks?
Al Guertler yes, I use it on my RAM with 5.9....great power adder.
12 valve?
Ditch Walkin 12 or 24v will work on either.
Why not propanem
So Bob why don't you sell your system to VW and become a millionaire...That is if they too can get the same mpg..The issue I see is that computer in the car will say your getting great mpg but when you check you mpg its always much lower then the readout on the car.....Good luck.
Are you still making these?
sorry now
@@DrVolksare you still using this set up?.... it is safe for the engine?....people says the engine will run hotter and destroying the piston rings...
CNG is way heavy, slow to fill and you have to fill way more often . Lpg would be better
I don't see how this saves money my math and tdi show that your system is more expensive to run than straight diesel. my 01 jetta tdi man trans gets 57.5 mpg when using hypermiling techniques so I would consume 1.04 gal of diesel. diesel price 3.85 cng price /gge 1.95 so when I do the math using your system .5 of diesel is 1.92 and 1.2 gal of cng is 2.34 so total trip on your system would cost $4.26 and on straight diesel it would cost $4.04 so please where the savings.
I got between 60mpg and 70mpg with my 2003 alh always driving 50 mph (80km) and always putting 59 litres in so this cng stuff isn't worth it TDI all the way
What is your eBay site for purchase?
where's the cng or lpg tank? is it in the trunk?
Of course
propane injection is better and easier to fill.
The fuel has to be injected at a precise moment during the cycle, you plumbed it directly into the air-intake, I'm guessing that it isn't concentrated high enough to combust when compression builds enough and the glow-plugs won't light it off.
What happens if you get into a crash and there’s compressed gas spraying everywhere?
Same thing for gas tank does or your EV battery……explode idiot!
hello bob
I have been using the CNG in my Toyota innova 2500 cc diesel
for the last 5 days ,I found the power is superb, and huge,
but the gain is not much noticible
what can be the problem or mistake I am doing
pls reply
thanks in advance
I am concerned the methane emission from this car. Some CNG gets unburnt in the TDI engine. CNG is primarily made of methane. Methane is a far more potent greenhouse gas than carbon dioxide. You may save money in this conversion/upgrade, but you may be emitting harmful emissions as you drive
you think anyone on here gives a shit about emissions from a little Jetta....
Good reply! Most of the methane is coming from icekk007.
Nat bad maiin gats 195..on.1 GALAN...
Need to contact you. Are u one Facebook
Hard to believe
yoshi1015 yoshidiman It is true it really is cheap
is this real
yes
Love it. Google 'THE WTF MOD rover'
ohhh my god . ı thought you re donald trump. your voice is same like his voice
good way to burn up the engine. that is not metered well enough....it will burn a piston. I promise
MJ you need to do your home work . I have installed over 50 unit and sold over the years many more systems. I am the only person in the USA to race a VW Beetle TDI CNG car on the road-race circuit. Never burned and thing but tires up. I no longer sell or install system the cost of CNG is to high to make it work
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ok so you have to pay for two different fuels? not to mention taking a 500 dollar jetta to the shop and paying them to convert it??? this video is bs
Whole Europe is using compressed propane in gas and diesel cars. Diesel is cheaper than in US, propane is way cheaper than equivalent of gasoline, propane keeps engine clean, gas mileage greatly improves and fuel cost is greatly reduced. Old installations used to start engine on gasoline, and you had to switch manually to propane. Newer ones could do that automatically.
Your bs what a bone head comment!
What douche pays a shop.just do it yourself
Pesky glow plugs
item # 251164511543
Need to contact you. Are u one Facebook