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Old 02-13-2012, 09:59 AM
mybigredram mybigredram is offline
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Join Date: Jan 2012
Location: The Great State of Texas
Age: 56
Posts: 45
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Vehicle: 2012 Dodge Ram 4X4
Color: Flame Red
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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These are the pages found in my 2012 manual. IF you have the EVIC it says one thing and actually addresses the MDS, otherwise it only addresses ECO ON/OFF. Since I do not have the EVIC I dont know if my truck is set up to use the MDS function, it does show the ECO ON/OFF but according to the manual that fuel economy based. I do know that the other day I was traveling I-10 east to Houston TX and as long as I was on flat road & in cruise control the ECO ON showed. As soon as I started up any incline, it switched and the ON disappeared. It did the same even if I was not using cruise control. The transmission did not downshift, and the RPM's only minimally decreased.


Last edited by mybigredram; 02-13-2012 at 10:14 AM.
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