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  1. #1
    Site Admin Green Hulk's Avatar
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    Installing an air fuel gauge on the SHO/FZ

    If any of you guys plan to extensively modify your ski it's real important to measure the air fuel ratio.

    We're lucky with the SHO engines in that we have an easy way to install the 02 sensor for the AFR gauge. There is a plug that can be removed in the exhaust manifold.

    What i have shown in the pics is an adapter a friend of mine made that will screw into the hole once you remove the plug and an 02 sensor can be screwed into it. This adapter isn't made commercially but if there is interest I can see about having some more made up.

    Install is simple. First remove the plug using a long 1/2" drive ratchet extension.
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  2. #2
    Site Admin Green Hulk's Avatar
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    Apply some sealant to the threads of the adapter and screw it into the manifold.
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  3. #3
    Site Admin Green Hulk's Avatar
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    You can now screw the 02 sensor into the adapter.
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  4. #4
    Site Admin Green Hulk's Avatar
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    when the air fuel gauge is not being used you can simply plug it off.
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  5. #5
    Site Admin Green Hulk's Avatar
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    Next time I go out on my FZR I'll measure the AFR and report the numbers on it. It will be interesting to see the numbers on a bone stock ski.

  6. #6
    I'm sure that this can be done on the FXHO as well, it has the same plug on the exhaust manifold.
    The only problem that I have heard of putting one on is that if the computer gets a bad reading from one of the sensors it can go into limp mode or shut down. I do not know if this is 100% true but it certainly makes sense.

  7. #7
    Sorry I forgot to mention that I was talking about putting in an oxygen sensor for better tuning!

  8. #8
    It's not the destination, it's the journey!! Rip'nTear SHO's Avatar
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    Quote Originally Posted by Green Hulk View Post
    when the air fuel gauge is not being used you can simply plug it off.
    u da man Jerry.....sign me up for one!!

  9. #9
    Site Admin Green Hulk's Avatar
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    The air fuel gauge doesn't connect to the ECU. It's a stand alone system.

    This is what I use
    http://www.dynotunenitrous.com/store...?idproduct=146

    Having an 02 sensor installed into the exhaust manifold won't cause any fault codes with the stock ECU.

  10. #10

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    Quote Originally Posted by Green Hulk View Post
    The air fuel gauge doesn't connect to the ECU. It's a stand alone system.

    This is what I use
    http://www.dynotunenitrous.com/store...?idproduct=146

    Having an 02 sensor installed into the exhaust manifold won't cause any fault codes with the stock ECU.
    I religiously log a/f in two different race cars. In my opinion gauges are eye candy, you really have to log a/f along with rpm's. The a/f varies across a wide range even in a short slice of time. Perhaps ever more important is how the raw data is interpreted by the software. Many of the popular O2 systems are off by a full point due to faulty interpretive algorithms.

    I am in for the adaptor, I will be logging a/f when I install the powershot.

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