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Old 05-23-2013, 12:44 PM
lamarsh lamarsh is offline
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Join Date: Feb 2013
Location: Detroit, Michigan
Posts: 9
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Vehicle: 2008 Ram 1500 5.7L Laramie
Trim Level: Laramie
Color: Black
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Sean, your observations are exactly what seems to be the general consensus, as well as what I've observed to be my results. Except, I'd characterize my results as a bit better than "slightly better" than stock. Because I'm getting several MPG better, I'd say that is a relatively significant increase, especially given the fact that I'm running 35 mud tires. Got 17mpg on a 4 hour highway run the other day *(up from about 12.5!), heading north with a 5mph wind coming from the west (so neither driving into the wind or with the wind, which I've observed makes a difference). Going to try to the 91 tune, while running 91 octane, pretty soon, and I will post the results.

Thanks for all of your input!

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