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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > General H3 Discussion

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  #1  
Old 05-18-2008, 07:13 PM
6pack 6pack is offline
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Default Re: Increased MPG

Ebay seems to have dozens of people selling these kits in one form or another. It looks like a majority of them talk about the O2 sensor problem. Most recommend the spacer talked about above that will move the sensor further out of the exhaust flow. One of the guys talks about using the foil method that my brother mentioned to me. Still researching...
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Old 05-19-2008, 08:21 PM
4.8t 4.8t is offline
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Default Re: Increased MPG

i'm working with a guy to make one for his exterra (spelling). we'll see how it goes. if you have a wide band it should show rich appon intial introduction of the HHO, then the fuel trims should work to start leaning things out for you. if you have a scanner like hptuners like i have you could watch in real tim what th STFT (short term fuel trims) are doing then you would know for sure if it is working.
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Old 05-20-2008, 12:06 AM
6pack 6pack is offline
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Default Re: Increased MPG

You're not in the mid-atlantic area, are you?

I don't have the HPTuner, have been thinking about getting it...
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Old 05-21-2008, 05:33 PM
4.8t 4.8t is offline
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Default Re: Increased MPG

no, i'm in maryland.
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Old 05-22-2008, 12:00 AM
6pack 6pack is offline
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Default Re: Increased MPG

You're kidding. I live in south Carroll County and work in Howard. Where r u?
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Old 06-26-2008, 01:37 AM
4.8t 4.8t is offline
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Default Re: Increased MPG

pax river navy base. sorry so long to reply been in afghanistan. there is a group near here that is real big into this and has intruction for free to build your own setup. or you can buy his parts for $170 and build it yourself or buy a built unit for $240.
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Old 06-26-2008, 12:27 PM
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wpage wpage is offline
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Default Re: Increased MPG

From what research is out there the trick to these Hydrogen generators is really to apply this fuel effectivly with a electronic device called a EFIE. For H3's what this does is signal correct the 02 sensors so they do not call for rich fuel mix to the ECN.
So if you were to install a hydroxy booster without a EFIE you would over time see no fuel savings once the 02 sensors have done thier corrections and called for a richer gasoline mix...
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