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economical air / fuel meter, fuel flow, etc...

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  • economical air / fuel meter, fuel flow, etc...

    does anyone have any personal experience with reasonably proced air fuel mixture set-ups / meters.

    I'm interested in something that would ideally measure air fuel mixture, instantaneous fuel consumption, etc... in order to optimize tuning for performance and fuel economy...

    Thanks in advance for any information / experience / thoughts.
    Just another moron with a computer and too much time on his hands...

    typical rainy afternoon on the river... http://www.youtube.com/watch?v=8Izi3v75jTs

    more recent, amateur camera operator for sure!... http://www.youtube.com/watch?v=EHoXsQc6644

  • #2
    Re: economical air / fuel meter, fuel flow, etc...

    Other than the many stand alone or GPS fuel flow meters i dont think there is much else out there
    If a dirty bottom slows you down what do think it does to your BOAT

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    • #3
      Re: economical air / fuel meter, fuel flow, etc...

      I don't know of any packages that measure anything other than fuel flow except the ones tailored for a specific engine harness... you can get packages for $1000 or more that will connect into the newer outboards and give you a ton of data.

      Personally I installed and configured a Lowrance LMF-400 display and fuel flow sensor and I'm quite happy with it for telling when I'm driving efficiently.

      Erik
      Sea Ray SRV-210 - Winter refit
      75-85 foot displacement hull trawler - gleam in my eye

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      • #4
        Re: economical air / fuel meter, fuel flow, etc...

        Only thing I can think of like that is the after-market wide-band O2 sensors like this:

        http://www.innovatemotorsports.com/products/lm1.php

        I guess you'd have to weld a tube/bung into a manifold (above the water inputs) and hope the moisture doesn't kill it.
        Any opinions expressed above are worth exactly what you paid for them!

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        • #5
          Re: economical air / fuel meter, fuel flow, etc...

          Originally posted by 45Auto View Post
          I guess you'd have to weld a tube/bung into a manifold (above the water inputs) and hope the moisture doesn't kill it.
          Not any more, Dennis Moore now has spacers that have integral O2 sensor bungs. Sells them for about $100 each.

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          • #6
            Re: economical air / fuel meter, fuel flow, etc...

            interesting product in the link above... especially if combined with signals from fuel flow meter, engine rpms and gps, could be a very useful set-up for tuning and determining the impact of changes...

            The spacers you mention wouldn't fit with my manifolds, but I've got some 1/2" and 3/4" aluminum stock I could use to make make a pair out of - that's if I have enough room under the hatch for the tops of the risers to come up a little. It's tight really tioght.... I've got imco powerflows with long risers, so hopefully water is far enough "downstream" to avoid problems with the sensors... Thanks!
            Just another moron with a computer and too much time on his hands...

            typical rainy afternoon on the river... http://www.youtube.com/watch?v=8Izi3v75jTs

            more recent, amateur camera operator for sure!... http://www.youtube.com/watch?v=EHoXsQc6644

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            • #7
              Re: economical air / fuel meter, fuel flow, etc...

              Hope it works out for you, Tim. I've got a couple of friends who use them and are very happy with them. One's in an insanely built Toyota MR2 with the "turbo from he**" on it (I swear he must have stole it off a Peterbilt - thing is huge!) , the other's on a Triumph TR6 with custom TBI in place of the original carbs. Don't know anyone who's done one on a boat. I would if my boat didn't already have all the Smartcraft stuff on it.
              Any opinions expressed above are worth exactly what you paid for them!

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              • #8
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                Re: economical air / fuel meter, fuel flow, etc...

                Tracked down those Moore Performance guys on Ebay, and looked at the spacer that was mentioned. If you build your own, I'd built it so that the sensor protrudes deeper into the exhaust stream. With it barely poking though, I can just about guarantee that you'll get a false reading. I would build my own before buying those... Especially at $100 each!

                Also keep in mind, with a wideband o2 sensor, the instant water hits the sensor, it's ruined! So you're going to want to make very sure to keep it dry. Keep your exhaust system in excellent shape to avoid water damage. Those wideband o2 sensors ain't cheap!

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