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2,8 Km/L...??!! (6.58 MPG...??!!)

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  #21  
Old 07-24-2010, 10:36 AM
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Originally Posted by SD90
The trip computer on my 08 H2 says I'm getting 16.9 L/100 km. I only drive in the city, with lots of freeway driving at 100km/h. I have 12 000 km on it right now, not great, but no worse than any other full size (Gas ) truck or SUV. And this is a HUMMER !
Hello, SD90. I remember you and your advices to me before I bought my 08 H2, just like your.
Yes, your 16,9 L/100 km is just that I'd like doing my H2.

Can you to understand my doubts and perplexity about the excessive fuel consumption detected in my H2?
 
  #22  
Old 07-24-2010, 10:41 AM
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Originally Posted by 85_305
^Outta curiousity.. whats your tires aired up to? I would keep the PSI about 38 or so if you can. That will certainly help a lot. I would also look into getting an aftermarket intake and a tuner, and perhaps an exhaust (money allowing). Those things typically help American V8's substantially and I think you would be pleased with a few mpg boost (and lots of power).
Ok, man, now I like you... Sorry if before I was a little hard with you.
And thanks for your valuable advices. I think this has to be the "spirit" in a Forum for enthusiasts.
Thanks again.
Luigi
 
  #23  
Old 07-24-2010, 12:20 PM
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It's all anecdotal right now but one day of rolling 39/39 psi I can feel a difference. Little rougher ride but I don't feel like I'm pushing the gas down as far to get going. I'll update after a week or two to see if it was a significant change. I also discovered if you run the compressor and close the doors you get a scary message about servicing air suspension.
 
  #24  
Old 07-24-2010, 03:03 PM
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My tires are all at 44 psi, I don't know how much a few psi higher will make, but it is an easy experiment! You should take it to a dealership and see if there is something wrong with the computer, maybe the fuel injection system needs to be tuned up?
 
  #25  
Old 07-24-2010, 03:41 PM
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at 44 psi your tires will not wear evenly, you will wear out the centers. Probably cost you more in rubber loss than fuel savings...


at 35PSI the factory BFG's will wear evenly and last a long time and are still soft enough to grip hard when called upon.

and... I always to 5 wheel rotations every oil change

my 2cents
 
  #26  
Old 07-24-2010, 03:54 PM
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Originally Posted by Luigi
Ok, man, now I like you... Sorry if before I was a little hard with you.
And thanks for your valuable advices. I think this has to be the "spirit" in a Forum for enthusiasts.
Thanks again.
Luigi
It's all good. All in the spirit of HUMMing
 
  #27  
Old 08-30-2010, 11:54 AM
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I have a few weeks of data now and I had one week that had bad data because I got an oil change and they let air out of my tires which killed my millage that week until I figured out what happened. It's summer in Texas so the AC runs constantly but I'm still eeking out 12.4mpg now which is a lot better than the 10.6 was averaging for the year prior to the tire pressure change.
 
  #28  
Old 08-30-2010, 12:34 PM
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WOW. Something is up dude. Off the dealer, I would be going!
 
  #29  
Old 08-31-2010, 03:52 AM
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Originally Posted by SD90
My tires are all at 44 psi, I don't know how much a few psi higher will make, but it is an easy experiment! You should take it to a dealership and see if there is something wrong with the computer, maybe the fuel injection system needs to be tuned up?
Hi SD90.
Please, can you say to me more precisely, what you mean by tuned up the fuel injection system?
Thanks.
Luigi
 
  #30  
Old 08-31-2010, 06:56 AM
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He's reffering to going to a shop and having them hook their machine up to it and cleaning it out. It works really well, but I'm thinking you have bigger issues than gummed up injectors.
 


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