(Klaus?) After an "updated programming", some 03s and 04s get 13.5MPG?

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(Klaus?) After an "updated programming", some 03s and 04s get 13.5MPG?

#27

11-22-2004, 03:59 PM

RIC-H0

Hummer Guru

Join Date: Nov 2003

Location: Yes..I really moved outta Texas!!

Posts: 2,605

RIC-H0 is an unknown quantity at this point

Let me know what I should tell Roy as you find out Seth. I would love to get better mileage, especially if it gets me 14+mpg.
I have always questioned the shift settings on my H2.
How would this affect my mileage with 37's on my'03?
My system currently says I'm getting 9.4mpg avg. without reprogramming for tire size change. Hopefully, it will add atleast 2-3mpg.

Ric-H2

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