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MDS Multi Displacement System Discussion


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  #1  
Old 07-01-2013, 08:15 AM
TexasBorn TexasBorn is offline
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Default MDS at idle?

Is there a way to switch or activate MDS when you're parked or at idle? just out of sheer curiousity. just seems like it'd help economy if you're idling or parked and only using 4 cylinders
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Old 07-01-2013, 08:17 AM
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99% sure no.

wouldn't be a terrible idea, idling does hurt MPG.

However, guys with aftermarket exhaust would HATE it. haha
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Old 07-01-2013, 10:15 AM
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The MDS Kit I picked up for my 4.7 (does not come with one) does this, when in traffic or at a light, basically any time you put your foot on the break it will engage and only run the engine on 4 cyl. and you don't even notice it.
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Old 07-01-2013, 11:20 AM
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Great idea that would be very smart to implement economy wise.

I usually shut it down if ever I'm stranded in gridlock for any length of time. Remember, sitting with the truck idling gets you 0MPG.
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Old 07-01-2013, 01:19 PM
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damn, well someone needs to get on that. maybe the folks with DS can make something happen with their tuners
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Old 07-01-2013, 03:12 PM
davidgcet davidgcet is offline
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i'd love to have MDS at idle as well, never thought about if it was doing it or not before this thread though. I often leave my truck idling for up to an hour due to needing the inverter running for work.
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Old 07-01-2013, 03:43 PM
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do they have the kit that Asur got for his 4.7 for the 5.7??

he said that thing works surprisingly well
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Old 07-04-2013, 07:47 AM
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Well i believe people would be complaining about a odd vibration when only runing on 4 cycl. I think it would throw the balance off and give you a shake u wouldn't want unless they put some expensive engine mounts in, kinda like my honda freaking 250 for one from dealer. R u sure u want 4 on idle lol. Good idea though
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Old 07-04-2013, 11:50 AM
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Quote:
Originally Posted by gonefishin776 View Post
do they have the kit that Asur got for his 4.7 for the 5.7??

he said that thing works surprisingly well
No vibrations at Idle as it plays with all cylinders when active, but I don't think they have a kit for the 5.7 that has MDS, that would be like having 2 units fighting over who will shut off the engine cylinders when running at speed? the whole engine would shut down lol


Last edited by Asur; 07-04-2013 at 11:53 AM.
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Old 07-14-2013, 07:49 PM
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So all it shuts off is the spark and fuel?
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