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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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  #1  
Old 08-22-2013, 05:12 PM
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Default Changing DSinTune 87 to 91 canned tune.

I have been running the 87 octane tune with 89 in the tank since I bought my tuner. Recently, my small town decided not to carry 89 octane and I all but refuse to run 87 octane. This leaves me with one option, 91 octane.

So my question is...after I've run a tank of 91 through and I'm ready to retune for the 91, should I return to stock before I do the retune? Or just go ahead and jump right up to it? Also, will I need to reset my changed parameters, ex: throttle, revs, speed, trans?

Thank you in advance for your input.
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Old 08-22-2013, 06:00 PM
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There shouldn't be an issue of switching from tune to tune. I do it all the time when I have to haul my trailer
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Old 08-22-2013, 06:42 PM
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Ok, that's good to know. What about my adjusted parameters? Will they transfer over with the 91 tune or will I need to go in and reset them?
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Old 08-22-2013, 06:50 PM
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The new tune will override them
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Old 08-22-2013, 06:52 PM
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Ok, so I'll have to go in and redo those. That's kind of what I figured. Just thought I'd ask. Any idea what kind of difference I might see between the two?
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