2006 and above the entire truck is hydroformed, making it stronger and lighter. Something you might want to consider

My truck didn't come with MDS and its an 06. I get pretty horrible gas mileage. It's not unbearable though. If you wanted 06 and above you can still get a truck without the MDS.

 

everyone seams to say city driving, its not worth it.... i disagree.
Since i put my light in i have noticed that i can drive anywhere and evrywhere around town on 4 cylinders. Once u get up to speed i u cancruise with it in 4 cylinders also you can accelerate with it in 4. obviously you can give it alot of gas but u can spee up with it in 4. Now for me the highway i dont notice it coming on as much as when i am in town.

 

For the amount more you'd pay for the newer years,, you'll just spend the whole time owning it trying to make that diff. up. I turned mine off awhile ago. Fuel savings are negligable and in a hilly area, MDS blows. it cannot even keep it's own pace...

to buy a newer one just for that reason to have mds is pointless IMO.

 

Not when you get a new one on a REALLY REALLY cheap after Christmas deal


wow...pretty confusing but i think its somewhat readable...
You sure you got the right wire when you installed it? Cause i find it hard to believe that it goes into 4 cyl mode in the city. Mainly because MDS only turns on with low engine work, reasonable speeds and the amount of acceleration. (i guess it falls into the engine work portion) Unless you are REALLY REALLY babying it i could not see it dropping into 4 cyl mode.
Just a thought does it turn on when you start the engine? MDS will not engage if it its just idling (which is really stupid in my opinion)

I am going to install an led for mine, so that i know, cause its *******ly impossible to know. All i am doing now is just looking at my MPG on my overhead console, when i get good mileage i know MDS is on. But I have never had anywhere over 15 in the city. The constant starting and stopping in the city would throw it out, not to mention half the time you probably not reach the MDS's desired speed to turn on

Maybe it is true i just find it hard to believe in my opinion, because i have never noticed it, even in my previous 2008 slt

 

I think the main issue with MDS is it comes on too often at too slow of speeds. I hooked up my LED last week and it's unbelievable when MDS kicks in.. I pulled into work on a slight uphill grade into a parking lot (coasting) and the damn MDS kicked on..Why?? Maybe if the tuners could adjust it to only work at over 35mph that would be better. Not 10-15mph. Since I have a flowmaster, you definately know when it kicks in.. Sounds like a helicopter chasing you..

 

yup i no forsure its done right, its easy look at the link i posted in a few of the mds threads. Once i get up to speed which is about 60 kph it comes on everytime. And yes i do drive it pretty easy but why drive it hard? Now around here i def notice on the highway that when its hilly it doesnt come on so for people with that kind of driving it would be useless. but for around me in canada i love it and yes it helps alot.

https://dodgeforum.com/forum/3rd-gen...tor-light.html
http://www.*********.com/forums/showthread.php?t=180371 were the * are put in dodge talk without a space

Yes it is a stupid thing that the MDS doesnt kick in when ideling. Once the truck is worm, i dont see y the truck should not run on 4 cylinders. Also once u get the light installed u will notice the truck kicking in and out of 4, it will drop and raise about 500 rpm when it does. And you cant go by the overhead console like everyone will tell you. Do an comparison, between the miles u drive and the amount of gas u put in it...

 

i agree with u on that, its wierd that it will kick on going up some hills. I would love to see a comparison between the ram running on 8 and 4 for like 10-15 min on a dyno to see how much gas u would actually use and or save.

 

I think there probably has been someone out there. Cause i would be interested too...


Ya we are pretty flat here in alberta so its really good out here...we have the odd hill but not enough to make any real difference...

Now you guys speak of tuners...I will probably be interested at some point but not right now...Are they an automatic tuner? Or do you yourself adjust the settings...Any presets? Like one for power, pulling, or fuel saver?
What would be neat (if its not out there already), to be able to tell the motor just to run in MDS all the time, and switch to 8 when needed Like an opposite MDS, When you are traveling in the city and need that fuel economy...Then switch it back for when power is needed...

I also think that with the newer systems they have made MDS to not come on unless going a certain speed. Cause it seems when i go over 60km/h i get better mileage...i will just have to install that led to do that. Maybe that will be this weeks project

 

Like was mentioned by a few people, my personal opinion is that the MDS sucks. I understand why Chrysler/Dodge included it, but at the same time, to me, I think it makes little sense on a 2 ½, 3 ton truck with the aerodynamics of a brick. Maybe on the Charger, 300, Magnum, etc. it makes a difference. But as for me, at least the way I drive, it did absolutely nothing, except make the exhaust sound like s***. I disabled it a few years ago when I got my Superchips, and I’m getting better mileage now without the MDS than I did before it was disabled.

 

I commute up this one 2 lane highway to work. It goes by 3 schools, varies from 30 to 55mph. 5 Traffic lights too. Can you imagine following a bunch of morons everyday stop, go, brake light, brake light, brake light....ahhh

Well my MDS kicks in and I can feel it in the peddle, sense it in the tone of the motor/exhaust(my truck is stock) and it's OK when I got nowhere to go, no reason to step on it, but it does come on at the stupidest of times.

With my Diablo Predator I got 15-16mpg at times on this commute. Regrettably I sold the Diablo and with both the winter fuels and the wicked cold we've got now....12 maybe 13mpg lately.

MDS works for certain people. I'm amazed at how few drivers can actually hold a steady peddle or ease into it when space doesn't allow "goosing it"

Back in my younger days I had an 87' Buick LeSabre T-Type. If you cruised at 50-55mph and let of the throttle...it would down shift to 3rd then upshift to OD. My father could not just hold the throttle in one place. It was let off, back into, let off, back into it....my tranny was shifting way too much. He didn't even realize. MDS would not work for him