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  #37  
Old 06-22-2016, 11:33 AM
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Re: Why does MDS suck so bad?

Quote:
Originally Posted by GoPlzGo View Post
no worries, many of us who lightly mod swear by our "butt" dyno's....I am quite sure a real dyno would expose us



have you looked into this?



Sprint booster

I'll check it out! Thanks for the suggestion. Do you have one installed?


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  #38  
Old 06-22-2016, 11:33 AM
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Re: Why does MDS suck so bad?

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Originally Posted by Nitemare3219 View Post
My 2014 SRT either has its mind set of 6K intervals, or there is no duty cycle calculator on this vehicle. I think my 2015 SRT Charger had it because it wanted changed around 5,500... not exact but thereabouts. The Jeep has been exactly 6K the past 2 times.
the SRT has a hard stop pre-programmed at 6k
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  #39  
Old 06-22-2016, 11:36 AM
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Re: Why does MDS suck so bad?

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Originally Posted by sost1sg View Post
I'll check it out! Thanks for the suggestion. Do you have one installed?


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no, just seemed interesting...if I had the lag that exists when in Eco mode when in Sport/Track...that said, I do get random lags even when in sport/track mode...seems like it missed it coffee that day sometimes...ahh the joys of software driven cars these days...
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  #40  
Old 06-22-2016, 12:46 PM
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Re: Why does MDS suck so bad?

Quote:
Originally Posted by Nitemare3219 View Post
....The Jeep has been exactly 6K the past 2 times.
Quote:
Originally Posted by GoPlzGo View Post
the SRT has a hard stop pre-programmed at 6k
Beat me to it GoPlzGo. 6K will be the max recommended interval. Harsher driving and/or conditions will cause it to signal sooner, but it won't signal later than 6K.
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  #41  
Old 11-08-2016, 10:01 AM
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Re: Why does MDS suck so bad?

I have about 1000 miles on my new 2017 SRT and I love, what a great car! But I started noticing some weird things...
When I drive at around 55 mph in 8th speed at about 1500 rpm the car starts vibrating , so much that rattles are coming out of everywhere.
On the highway if I use the acc, which I loved in my Overland , I can feel the Jeep launch forward every time the 4 cyl light goes off, and I clearly hear the engine change. When the 4 cyl light is on it feels like I'm in a small plane because of the noise!! The noise and vibrations instantly disappear when push the gear shifter in sport and the engine is smooth as silk.
Is there something wrong with my car or is it just the mds system that is crap?? My 2005 Hemi had mds and I could hardly feel it coming on or off.
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  #42  
Old 11-08-2016, 10:38 AM
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Re: Why does MDS suck so bad?

Get used to the mds. It sucks. I swear that it's programmed to not activate until you hit a 100 miles or so. That way the test drive goes without irritation. The single feature I despise on my SRT.


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  #43  
Old 11-08-2016, 11:58 AM
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Re: Why does MDS suck so bad?

I have a '16 with 3500 miles so far and I dont think I have ever felt the MDS. Maybe I drive too fast lol
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  #44  
Old 11-08-2016, 02:45 PM
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Re: Why does MDS suck so bad?

Quote:
Originally Posted by flaverdiere View Post
I have about 1000 miles on my new 2017 SRT and I love, what a great car! But I started noticing some weird things...
When I drive at around 55 mph in 8th speed at about 1500 rpm the car starts vibrating , so much that rattles are coming out of everywhere.
On the highway if I use the acc, which I loved in my Overland , I can feel the Jeep launch forward every time the 4 cyl light goes off, and I clearly hear the engine change. When the 4 cyl light is on it feels like I'm in a small plane because of the noise!! The noise and vibrations instantly disappear when push the gear shifter in sport and the engine is smooth as silk.
Is there something wrong with my car or is it just the mds system that is crap?? My 2005 Hemi had mds and I could hardly feel it coming on or off.
To slow the car down the ACC will downshift. That causes the engine speed to increase which shuts off the MDS. Next time it happens check the speedometer and the tach. You may find the tach is up and it is you lurching forward, not the Jeep.

As for the noise, that is a known issue. I know the Summit has noise cancellation technology built into the sound system for this purpose.
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  #45  
Old 11-08-2016, 05:02 PM
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Re: Why does MDS suck so bad?

My Ram does the same thing only you can manually shift it down to 7 then up to 8+ and it seems to disable mds. I wish you could do that in the GC.


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  #46  
Old 11-08-2016, 05:14 PM
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Re: Why does MDS suck so bad?

Heres what I do. Start off in Sport mode through the first 4-6 gears, slap it into Drive mode to get into 7th/8th and then slap it back into Sport. Mine holds 8th gear in Sport mode and I cant say Ive ever felt MDS kick on
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  #47  
Old 11-08-2016, 10:45 PM
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Re: Why does MDS suck so bad?

Thank you for your responses, but Bill the transmission does not downshift everytime mds goes off, it does not explain the surge in power every minute to ajust to the speed of the car in front ouf me. This system is suppose to go from 8 to 4 cyl and back depending on driving conditions without the driver noticing it, at least not that much. I've seen it work in a Hemi 5.7 and if the radio was on I could not notice it. And from the responses of other owners it seems everyone has figure out a way to go around it in sport mode... which will have exactly the opposite effect it was designed for: save fuel. I cannot beleive engineers drove this and decided it was ok. But hey, this car in sport mode is FANTASTIC to drive!
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  #48  
Old 11-09-2016, 08:01 PM
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Re: Why does MDS suck so bad?

You can thank the greenies for MDS.
Chryslers version of Volkswagon software.
With retuned cam timing etc, and MDS off, I get 10% better mpg than OE.
Even with a supercharger it is 8-10% better.
NOX is probably not good tho and that is what the greenies get upset about.......
But I just hate the NVH that comes with MDS most of all.
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