I need a vent session. After a 500 mile trip up north Thursday and Friday, I am happy to report I really love my truck..EXCEPT the nonsense MDS... Around town I can get away with taking it out of over drive to cancel out the MDS, but even that can be annoying because it consumes a lot more gas than needed, by revving the motor out. However on the highway, its obviously not good to leave it out of overdrive nor should I need to take it out. I was absolutely furious how the truck kept telling me when it wanted to go in and out of 8 cylinder mode. Every time I would get up to maintaining a speed at 80mph, the truck decided to give me a 2.85liter engine...if i wanted a car I would have bought one, if i wanted good gas mileage i would have bought a bike..Even my dad, who followd behind me, could hear how the engine kept kicking in and out of 8 cylinder mode with the new exhaust. He said it drove him crazy just listening to the motor switching in and out. I think its b.s I have to spend $400 on a chip just so I can have the v8 that i already speant $33,000 for. How bout you guys, anyone else fed up? I also hate how it loses power...and it vibrates the truck. GRRR! On top of all of this, the truck still gets horrific gas mileage with this proclaimed fuel saving mode..I would get way better gas mileage if I could just have all my 8 cylinders, and drive diligently oppose to the truck sucking down more fuel trying to move a 5000lb truck with a neon engine. So pissed.

 

You can disable MDS without taking it out of overdrive. MDS is off when your in the gear selector mode so just leave it on "5" when you don't want mds on.

 

No trouble with mine. I get a full 2-3 mpg's better than the '05 I had with the Hemi, same gears and tires. Got a Magnaflow muffler and you can hear it but it's not that bad. I guess a switch to turn it on and off would be a good idea for those that don't like it.

My mileage drops like a rock at 80mph. More to do with trying to move a brick though the air than the MDS.

 

I like the MDS myself, I get 2-3 MPG more with it.... You probably should have done your homework regarding the exhaust issue...

 

5 displayed is actually the 1st OD gear. Same as when you are in tow haul. It's a bit confusing but that is because they are renumbered when the extra underdrive gear is being used.

Normal 4th and 5th gears are both overdrive.

4th-0.75:1
5th-0.67:1

 

i think you might be in the minority here. it hands down gets better mpg with the mds. you should have bought a ford if you didnt want mds. they are the last trucks left without it i believe. they have horrible mpg to match it also.

usually i cant get my truck to stay in mds above 75mph with 3.55's anyway......

 

My truck is the same way. I've gotten 22mpg on the highway by setting the cruise control at 70mph.

This thread reminds me of the 16 year old who had the same problem. That kid, and this guy, need to learn how combustion engines work before throwing a tantrum. There's more to an engine than displacement.

 

i am with you. i hate the MDS but i have mine disabled with a predator. didnt even notice a loss in mpg's. I nlticed a huge improvement in my shift points and firmness and the truck feels alot different than stock. The mds should be an option not standard.. i didnt buy a 390hp to save gas. id rather have all v8 all the time. I also cannot stand the esp but i wont rant on that.

 

No problem with mine, early build no light don't know when its on unless I go to stomp on it, one of the reason I won't upgrade the exhaust, has nice note stock, I'm happy with it, sorry your disappointed.

 

^+, ditto. Mine is an early build no light. Can't tell when its 4 or 8. Performance is more than acceptable.