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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #171  
Old 03-03-2014, 08:05 PM
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Well if I don't see a decent bump in MPG then I'd rather enjoy a straight 87 tune or 91. Easier to find 87 though...

I'm getting all my performance parts installed in 36hrs so I'll have to begin the test runs all over again, but at least I won't be adding anything else after that. I'll have a stable platform to do my testing, and then have an idea of which tune does what.

In the end this will include collaborative custom tunes from hemifever/moe's.


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  #172  
Old 03-03-2014, 10:14 PM
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I would think the 87 tune might be best for mileage, as it adds 25lb-ft of torque but not much hp. This is probably all down low, making for smaller throttle opening to maintain a given speed.
I can also justify the 93 tune because I get double petropoints on the 94 octane...adds up quick with 121 liter tank
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