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Old Dec 14, 2008 | 11:23 AM
  #41  
buzzkillwill's Avatar
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From: PA
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Yeah, I agree with others, it's not the truck, it's gotta be the tune. What kind of gas mileage are you getting right now. I wonder what your AFR is...?
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Old Dec 14, 2008 | 11:29 AM
  #42  
GMCDee's Avatar
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Originally Posted by buzzkillwill
Yeah, I agree with others, it's not the truck, it's gotta be the tune. What kind of gas mileage are you getting right now. I wonder what your AFR is...?
Actually im getting good gas mileage better then when i had the 4.8, in town its not so good but highway its great so that should say something huh.
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Old Dec 14, 2008 | 12:43 PM
  #43  
GMCtrk's Avatar
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Originally Posted by GMCDee
Actually im getting good gas mileage better then when i had the 4.8, in town its not so good but highway its great so that should say something huh.
Actually, this exactly mimics my results. The 6.0 gets better highway (23.5) but about 1-1.5 worse in the city
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