MDS question

[rking300]

I'm sure this has been beat to death, so I apologize.
Other than sound with new exhaust (which doesn't concern me much).
What's the benefit of turning the MDS off? How's it changes MPG? etc. etc.

 

[bigdodge]

I'm sure this has been beat to death, so I apologize.
Other than sound with new exhaust (which doesn't concern me much).
What's the benefit of turning the MDS off? How's it changes MPG? etc. etc.

what's the benefit, peace of mind in my opinion.

https://www.jdpower.com/cars/shopping-guides/cylinder-deactivation-how-it-can-save-fuel#:~:text=Rather%20than%20cut%20off%20fuel,supplied%2C%20causing%20gasoline%20to%20accumulate.

 

[theblet]

It helps a bit, but not life changing by any means.

When you’re cruising at 35 to 50 mph you’ll see instant MPG around 30. Also saves fuel when slowing down, or coming down a hill.

 

[Boatman22]

How do you turn the MDS off?

 

[Willwork4truck]

I use the paddle shift to do that. Then make sure its back to “8”. Costs appx 1.5 mpg on my drives.

Theres several YT vids that claim the hemi block has oiling issues with it off.

I’m sure you will get about as much agreement/disagreement on it’s benefits as when we discuss, uhh, oils.

 

[theblet]

How do you turn the MDS off?

You can temporarily disable it by setting the manual gear selector to 8, or using tow haul mode.

Permanent disable required changing the camshaft and lifters, (and a custom tune i suppose.) Don't think many go this route.