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  #11  
Old 12-14-2013, 08:33 AM
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didimauw didimauw is offline
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Quote:
MDS is for poor sound, uneven cylinder wear(imo), poorer drivability, extra 25lbs of junk bolted to the truck, all for 2 mpg savings when coasting haha.
I am worried about the price of things if the engine goes bad, simply because there is alot of stuff going on in there. I was told that on the freeway you don't want the tow haul button on, because it will mess up the trans? Any one hear that before?
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  #12  
Old 12-14-2013, 09:57 PM
huntergreen huntergreen is offline
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on the last chat with the engineers, it was recomended that the tow haul not be used unless towing. don't remember why. they did suggest that you just tap the shifter so that the it will lock out the overdrive and this will disable the mds.
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  #13  
Old 12-15-2013, 03:08 PM
hemi deep hemi deep is offline
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I would just put it in 5th myself to disable MDS. Only use tow/haul when I am towing my 3000# boat/trailer in the steep hills to save on the constant shifting.
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  #14  
Old 12-17-2013, 01:40 AM
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[QUOTE=Trainwreck68;1265680]I ran for 1 week with the MDS active and 1 week without it and didn't notice any mileage difference at all, even on the highway. 18-19mpg with or without all highway miles.[/


I think that when you disable MDS in the EVIC, youre not disabling it as a function, youre disabling the the message from coming up up on your EVIC, but MDS is still active. correct?
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Old 12-17-2013, 10:21 AM
huntergreen huntergreen is offline
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[QUOTE=MrGoodbar;1270447]
Quote:
Originally Posted by Trainwreck68 View Post
I ran for 1 week with the MDS active and 1 week without it and didn't notice any mileage difference at all, even on the highway. 18-19mpg with or without all highway miles.[/


I think that when you disable MDS in the EVIC, youre not disabling it as a function, youre disabling the the message from coming up up on your EVIC, but MDS is still active. correct?
no, when you lock out overdrive you disable the mds, not just the display.
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  #16  
Old 12-23-2013, 01:50 PM
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So has anyone confirmed with Dodge/RAM that disabling the MDS will not cause any long term issues with the engine yet? I asked my dealer and they could not answer except to say not to do it.
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  #17  
Old 12-23-2013, 04:44 PM
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The only thing your doing by turning off the MDS is not allowing the 4 MDS solenoids to get electrical power, which in turn is not allowing oil to unlink the lifters, keeping the valves working and not powering the 4 fuel injectors. All the V8 stuff just keeps humming along. There is nothing to be hurt in the engine here.
It all depends on how far and what kind of driving you do if the MDS is in fact saving you fuel. For RAM on it's Fleet Mileage, its the only way RAM could pass EPA mileage needs.
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  #18  
Old 12-23-2013, 05:17 PM
Trainwreck68 Trainwreck68 is offline
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I have driven with the MDS on and with it off and honestly never noticed much of a difference.
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  #19  
Old 12-27-2013, 12:11 AM
dtru1222 dtru1222 is offline
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"around town" driving you will not notice a difference. MDS is most useful when driving long distances around 65mph (will vary). If you drive 80mph everywhere then turn it off you will probably not see a difference in MPG as it doesnt work well/that often at 80. In both my Challenger and my Ram, I lost top highway mpg by disabling it. In my Challenger I got up to 30.7, disabled it and the most I could get was 28.
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