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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 11-04-2006, 11:24 PM
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timgco timgco is offline
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Default Re: Hypertech Programmer

top speed (all the way up)
rev limiter (all the way up)

1-2 +4mph
2-3 +5mph
3-4 +6mph

increase the shifting to firm

Start there and see how you like
i run mine and the low octane setting
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  #2  
Old 11-12-2006, 05:15 PM
tattoou tattoou is offline
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Default Re: Hypertech Programmer

What are you getting for gas mileage with these ?
I was thinking
1-2 -1mph
2-3 -2mph
3-4 -3mph
I'm going on a trip and looking for better mileage ?

Quote:
Originally Posted by timgco
top speed (all the way up)
rev limiter (all the way up)

1-2 +4mph
2-3 +5mph
3-4 +6mph

increase the shifting to firm

Start there and see how you like
i run mine and the low octane setting
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  #3  
Old 11-12-2006, 05:19 PM
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CslRkH2 CslRkH2 is offline
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Default Re: Hypertech Programmer

If you're looking for better mpg then you probably do not want to change the shift points to later (+1, +3, etc), because that would let the engine run at higher RPMs longer before shifting.
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Old 11-12-2006, 09:33 PM
tattoou tattoou is offline
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Default Re: Hypertech Programmer

I'm trying -1, -2 & -3.
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  #5  
Old 11-12-2006, 09:49 PM
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Default Re: Hypertech Programmer

Ahh I see, I wasn't reading your (-) as a minus/negative.

You could probably leave the lower shift points normal too, since you usually not shifting from 1st to 2nd on the highway.
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  #6  
Old 11-12-2006, 11:31 PM
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Default Re: Hypertech Programmer

The way that the manual reads, it only adjust shift points at WOT. If so, doesn't seem like it would help much everyday driving. I haven't changed shift points yet, not sure what to do with them.
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