Why so much hate for MDS and auto stop/start?

[Ramjack]

. . . and has yet to impact my performance

That's certainly not data. That's your opinion.

 

[Ramjack]

I'm not saying you're not allowed to enjoy vanilla, I'm saying no one has produced any facts or data to say why vanilla is superior to chocolate.

You still don't get it. You basically said that those who don't want cylinder deactivation or start/stop to interfere with the full power of their V8 engine are ignorant hillbilly simpletons. To be clear, I have MDS and eTorque and I don't disable them. That's not the problem. The problem is elitists who denigrate those who don't wear their particular scent of body spray and deem them to be inferior individuals.

 

[BowDown]

That's certainly not data. That's your opinion.

No, that's fact. When I press the accelerator Pedal, the truck moves without hesitation. Turn the eco light on from the uconnect menu, let the truck go into eco mode (MDS). Once in MDS or eco mode, press the throttle and see how quickly the light goes out, MDS disables lighting fast
But.. where's your data to the contrary?

If MDS bothers you that much and you truly believe it hurts performance then buy the superchips module

Dodge/RAM 1500 5.7L Hemi Pulsar Tuner | Superchips

Dodge/RAM 1500 5.7L Hemi Pulsar Tuner. Shop Now.

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FEATURES

User-adjustable power levels via cruise control buttons

Adjustable power levels on-the-fly

Improves economy, towing capabilities, and performance

Up to 8 performance levels

Tire Size options 20" - 59"

Gear Ratio options 2.00 - 5.99

Power level displayed on OEM dash

Adds up to 30 HP and 30 ft-lbs TQ

Advanced ignition timing (spark)

User-selectable MDS on/off

Adjusts accelerator pedal response

Personally, I have no interest in trying to make this truck fast or sports car like, it'll never be either

 

[BowDown]

You still don't get it. You basically said that those who don't want cylinder deactivation or start/stop to interfere with the full power of their V8 engine are ignorant hillbilly simpletons. To be clear, I have MDS and eTorque and I don't disable them. That's not the problem. The problem is elitists who denigrate those who don't wear their particular scent of body spray and deem them to be inferior individuals.

No, he said no one has factually validated their negative etorque/mds statements. All the comments about MDS/Etorque have been emotional comments and unvalidated vs what FCA states.

 

[Ramjack]

No, he said no one has factually validated their negative etorque/mds statements. All the comments about MDS/Etorque have been emotional comments and unvalidated vs what FCA states.

Drewster said:

You can sum up forum members here in one of two camps. Either
"I bought this truck because it's comfortable and advanced - I like not guzzling gas"
Or
---> "I insist on having a big V8 in 'mah truuck, and I want it to be 8 cylinders all the time so I can think about mah big V8"

 

[BowDown]

Drewster said:

You can sum up forum members here in one of two camps. Either
"I bought this truck because it's comfortable and advanced - I like not guzzling gas"
Or
---> "I insist on having a big V8 in 'mah truuck, and I want it to be 8 cylinders all the time so I can think about mah big V8"

Lighten up - all I'm saying is that folks hating on MDS and Start Stop are doing so purely out of emotion/ opinion. That's totally fine, but trying to apply logic to it like the OP of this thread is just pointless, because the decision has nothing to do with math or logic.

Sounds like you'd be happier in a Toyota

 

[Ramjack]

Sounds like you'd be happier in a Toyota

I'm thrilled with my Ram, but I have one of those too.

 

[rightushook]

Two guys are taking a leak off a bridge into a river. Trying to one up each other, one says "damn, this water is cold". The other replies "yeah, deep too"

The river is super wide too

 

[SD Rebel]

I'm too lazy to go back and read all the posts, has anyone yet confirmed if MDS actually improves valvetrain lubrication like that Youtube video suggested?

Since watching that video, I've left MDS on and to be honest, the slight drone that happens doesn't bother me anymore.

 

[tidefan1967]

The jury is still out on whether MDS is detrimental to the engine but I will say that it is barely noticeable compared to the 4th Gen trucks so I haven't worried too much about disabling it yet. Since it is pretty much a fact that the Hemi has a lubrication deficiency going all the way back to 2009 when the Eagle debuted I would honestly think that start/stop is bad since most wear occurs when an engine is started and doing so multiple times per trip just increases the possibilities of potential cam/lifter problems down the road. This is coming from someone who has owned several Hemi's over the last few years and has dealt with the cam/lifter issue first hand. My first Ram lost the cam/lifters at 32K miles and here I am still a Ram customer. I was a GM guy before that. I'm not some guy that bought his first Ram last year and has 10k on it and thinks he's an expert because of what he saw on Youtube or read in the manual.

 

[TNRamGuy]

, this is funny, 150 posts of butt hurt.

So will bigger 295/75/23 tires give me better mpg? Lol

 

[Warship2k15]

Ok I don’t like the mds system because it gives problems lots of times and very seldom does it save much if any fuel.

It’s there so that the manufacturer can claim a certain gas mileage.

The problem is that the testing for mpg is that the tests aren’t close to real world driving.Which is why most people get very of any real world savings.
So basically the manufacturer sets it up just to be able to claim a mpg using an outdated testing method .
So to me more complexity,chance of failure and no real word increase means it’s a loser to me.

 

[ChryslerVette]

I think the thought of having a momentary, (four cylinder) engine in your full sized, Hemi pickup just bothers some folks!

 

[vincentw56]

The jury is still out on whether MDS is detrimental to the engine but I will say that it is barely noticeable compared to the 4th Gen trucks so I haven't worried too much about disabling it yet. Since it is pretty much a fact that the Hemi has a lubrication deficiency going all the way back to 2009 when the Eagle debuted I would honestly think that start/stop is bad since most wear occurs when an engine is started and doing so multiple times per trip just increases the possibilities of potential cam/lifter problems down the road. This is coming from someone who has owned several Hemi's over the last few years and has dealt with the cam/lifter issue first hand. My first Ram lost the cam/lifters at 32K miles and here I am still a Ram customer. I was a GM guy before that. I'm not some guy that bought his first Ram last year and has 10k on it and thinks he's an expert because of what he saw on Youtube or read in the manual.

You are right about startup oil after a vehicle has been sitting for awhile and the oil has drained back down into the crankcase, but the time that the start stop is active and the engine is off isn't going to lose that much oil to cause issues.

2020 Bighorn Night Edition, 5.7 Hemi w/eTorque

 

[vincentw56]

, this is funny, 150 posts of butt hurt.

So will bigger 295/75/23 tires give me better mpg? Lol

So far, I've not seen one single reason to disable any of it except they don't like it. But, at least people have the option to turn it off if there is an opinionated reason for it. To each their own as they say.

2020 Bighorn Night Edition, 5.7 Hemi w/eTorque

 

[BowDown]

The jury is still out on whether MDS is detrimental to the engine but I will say that it is barely noticeable compared to the 4th Gen trucks so I haven't worried too much about disabling it yet. Since it is pretty much a fact that the Hemi has a lubrication deficiency going all the way back to 2009 when the Eagle debuted I would honestly think that start/stop is bad since most wear occurs when an engine is started and doing so multiple times per trip just increases the possibilities of potential cam/lifter problems down the road. This is coming from someone who has owned several Hemi's over the last few years and has dealt with the cam/lifter issue first hand. My first Ram lost the cam/lifters at 32K miles and here I am still a Ram customer. I was a GM guy before that. I'm not some guy that bought his first Ram last year and has 10k on it and thinks he's an expert because of what he saw on Youtube or read in the manual.

Most wear occurs on cold starts, not multiple restarts on a warm engine. Auto start/stop doesn't engage until the engine is up to temp

 

[BowDown]

Ok I don’t like the mds system because it gives problems lots of times and very seldom does it save much if any fuel.

It’s there so that the manufacturer can claim a certain gas mileage.

The problem is that the testing for mpg is that the tests aren’t close to real world driving.Which is why most people get very of any real world savings.
So basically the manufacturer sets it up just to be able to claim a mpg using an outdated testing method .
So to me more complexity,chance of failure and no real word increase means it’s a loser to me.

Lots of people keep saying this but not one person has validated this premise with fact

 

[KonaLaury]

I have no problems with either one. As mentioned by others the stop/start is essentially transparent to me. Before my foot hits the gas pedal the engine has already restarted.
The only thing I do not like is when mds cuts in the engine can feel like it has a 'miss' (which of course it does).

 

[Dusty1948]

Relative to the supposed issues surrounding MDS, specifically reliability, all of the "theories" put forth as to why there's lifter/camshaft failures are just that - theories. So far nothing has been empirically proven to be the cause, whether it be high idle time, poor lubrication or other design characteristics, lack of MDS usage, etc. The contention that the direct cause is MDS doesn't explain why the survey (I believe on this website) found that cam lobe damage occurred randomly on MDS and non-MDS cylinders alike.

Whatever the favorite assumption, there's always evidence to the contrary. I know of several high mileage Rams that have never had a valvetrain failure, and 2010 5.7 in particular hat just turned 206,000. How many have reported cam/lifter failures here? Compare that to the approximately 7-8 million 5.7s sold since 2009. The negatives always are the stronger and most heard voices.

Humans often become the prisoner of their own opinions. If people don't understand something very well there is often a tendency to blame the thing that is strange, unusual, or they don't understand or have much faith in. New engine designs take years to come to fruition. The 5.7 Hemi design started in 1999 and manufacturers run series after series of reliability/self-destruction tests to prove the design, including unreasonable hours of idle time and high RPM, cold cycle, hot cycle, load, and the effects of subsystem failures. The one person who stated in his online video that it's cheaper to warranty cam and lifter replacements in the field than fix the problem is not a broad thinker. What ever the cost of billable parts and labor warranty, it most certainly does not include the price paid for poor customer perception and negative reputation.

Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33 gallon fuel tank, factory dual exhaust, 18” wheels. Build date: 03 June 2018. Now at: 050997 miles.

 

[BowDown]

Hated MDS on my previous Laramie. I could hear and feel whenever it activated/deactivated, especially after I upgraded the exhaust. On my current Limited I can't even tell when it is active or not other than the ECO light telling me. I don't have any issues with it on this truck. Maybe that will change if I upgrade the exhaust, but for now I'll just let it do its thing.

I have no issues with stop/start now that I installed the auto stop eliminator. Best $99 I've spent on this truck. There is too big of a temperature swing when sitting at a long stop light. And the A/C produces an odor when the compressor isn't running.

Check your cabin filter