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  #13  
Old 10-19-2011, 10:32 PM
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Re: Kill MDS

This is a great fuel saving technology. I runs in 4 cyl mode when no throttle is applied, and instantly to 8 cyl when you dip into the throttle. It is unnoticed by most.

Do not understand your "crap" statement.

Sounds like you are driving your Dad's Jeep.
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  #14  
Old 10-20-2011, 12:22 AM
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Re: Kill MDS

Well it's all fine and good until you need throttle ... MDS introduces lag from when you put your foot down on the pedal. I had the hemi in my 2005 Durango and it was flawless.
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  #15  
Old 10-20-2011, 07:03 AM
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Re: Kill MDS

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Originally Posted by BuckeyeSRT View Post
They way we used to do it in my Hemi Magnum was to drop it from "D" into the specific gear and that disable it.
I forgot to try this yesterday. Does it work in the current Hemi?
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  #16  
Old 10-20-2011, 09:38 AM
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Re: Kill MDS

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Originally Posted by BuckeyeSRT View Post
They way we used to do it in my Hemi Magnum was to drop it from "D" into the specific gear and that disable it.
Doing that disables the higher overdrive gear. From the owner's manual:
"When in the DRIVE position in fifth gear, the first tap to the left (-) will downshift the transmission and display 5 (ERS 5 is the same as normal fourth gear). Another tap to the left (-) will shift the transmission down to ERS 4 (direct gear)."
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Old 10-21-2011, 12:29 PM
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Re: Kill MDS

MDS disengages in like .04 seconds or something like that. I can't feel mine when it switches back to regular mode.

The ECO light is not linked to MDS either. I hated that light and have turned it off in the EVIC.
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  #18  
Old 10-21-2011, 02:38 PM
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Re: Kill MDS

Quote:
Originally Posted by Andrew Klossner View Post
Doing that disables the higher overdrive gear. From the owner's manual:
"When in the DRIVE position in fifth gear, the first tap to the left (-) will downshift the transmission and display 5 (ERS 5 is the same as normal fourth gear). Another tap to the left (-) will shift the transmission down to ERS 4 (direct gear)."
On my 2012, you can manually shift through the whole range, so it doesn't disable any gears.

Regarding Eco mode, from the 2011 Owner's Manual, pg 273:

"The FUEL SAVER MODE message will display above the average fuel economy in the EVIC display. This message will appear whenever MDS (if equipped) allows the engine to operate on four cylinders, or if you are driving in a fuel efficient manner."

Does this mean that it is linked to MDS on the 5.7, and just linked to fuel economy on the 3.6?

Shifting into specific gears disables the light, but may or may not disable MDS; nothing in the manual suggests that it is ever turned off.
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  #19  
Old 10-26-2011, 08:41 AM
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Re: Kill MDS

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Originally Posted by berk483 View Post
MDS shuts off 4 cylinders when you are traveling 55mph+ and on flat ground or downhill to save gas.

This is incorrect as MDS operates at low speeds and highway speeds, and is a function of how far you push the pedal down more than anything. I have a CAI which makes the switching audibly noticable, and heard at 20 mph or 60 mph.
MPG in a hemi can be improved by 5 mpg or more just by driving habits, particularly slow starts from a stop, so operating in MDS mode and quickly upshifting.
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