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    VWVortex


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    Thread: VW TDI Diesel Gets 120 MPG on one Gal of Diesel with CNG blend!!

    1. 05-27-2012 05:05 PM #1
      I have this on Freds TDI site and
      I have how I build the kit at my site www.CNGVW.wordpress.com
      It has been working very good before some of you start to go wild please view both site.


      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
      If I do the math right here on an average a TDI gets 45 MPG at $4 a GAL that is 11.2 cents costs per mile traveled.
      Using a CNG blend system it cost 03.3 cents per mile traveled on Diesel. CNG cost per mile traveled is
      .02 cents at $1.00 a GAL (GGE). If I did the math right someone please check it that is a cost of
      05.2 cents per Mile traveled a savings of 58.2 %. I pay for home fueling now .40 cents a GAL that should push me in the 80% saving on fuel cost.
      I have over 1000 miles on this test system no codes just works.

      Bob Mann

    2. 05-28-2012 12:05 PM #2
      Hi Bob,
      To a 'limey' paying more than $8 USGal for diesel here in the UK your kit sounds very interesting, but what does CNG stand for? Is it something Natural Gas? Our domestic gas is natural, and if I could use that to supplement the running costs of my '99 Mk4 Golf Tdi it'd be very useful. My car has over 115 thousand miles and still averages between 50 and 58mpg.

      All the best,
      Ernie

    3. 05-28-2012 05:39 PM #3
      Hello It stand for Compressed Natural Gas we run 3000 PSI or 3600 PSI systems. I do have a LP system to I just need to do a few test runs with it
      Bob Mann

    4. 05-30-2012 03:50 PM #4
      Thanks Bob, I'll keep an eye on here to see what you come up with.

      Ernie

    5. 05-30-2012 11:47 PM #5
      Hello, I am SERIOUSLY interested in this solution for economy as I drive over 580 miles per week commuting. That rounds out to ~ $200 per month but if your solution is safe as reported and accurate, I could drive a month or more on a single tank of diesel + CNG!

      I've checked out your blog and want to know more please thanks!


    6. 06-01-2012 08:33 AM #6
      Hello I just did a Youtube on how the car looks and drives.
      http://youtu.be/Yem6t6GQrc8

      Bob Mann

    7. Member
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      '05 Jetta TDI Wagon.
      06-01-2012 10:21 AM #7
      3600psi? No thanks. Not worth the 20% in fuel savings.

    8. Member Rockerchick's Avatar
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      '03 BMP 20th GTI, '84 TD Jetta
      06-01-2012 12:23 PM #8
      As stated on TDIClub, you can't really claim 120mpg. This was not just on diesel fuel alone, you also used CNG so saying you get 120mpg on diesel is bogus.
      Quote Originally Posted by TM87 View Post
      VW-making mechanics out of owners since 1957.
      The project - '84 Jetta 1.6TD, 186k+, fully rebuilt, Giles IP and injectors, 2.5" custom exhaust, 51mpg
      Hers - '03 BMP 20thAE GTI, 130k, 3" 42DD turbo back, Unitronic Stage 2
      His - '01 Jetta TDI, 135k. Now has 3 pedals, as it should!

    9. 06-03-2012 01:51 PM #9
      I see you can not read please show what you have don lattley.
      Bob Mann

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      06-03-2012 04:06 PM #10
      Quote Originally Posted by bobtec View Post
      I see you can not read please show what you have don lattley.
      Bob Mann
      So what's the mileage considering you're burning both CNG and diesel? You can't just state the diesel mileage, when half of what the engine is burning is CNG.

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