MDS

rich1946

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2018 rubicon
Anyone have any info on the MDS delete programmer yet. I really want to delete the four cylinder drop at cruise.
 
I think the Livernois tune can do this, but have to buy extra pcm if you want to be able to hide changes from dealer. $699 for programmer and tune and $700 for extra pcm I think.
 
I think the Livernois tune can do this, but have to buy extra pcm if you want to be able to hide changes from dealer. $699 for programmer and tune and $700 for extra pcm I think.
thankyou
 

How To Disable MDS on Hemi Without The Use of a Tuner​

This option provides a temporary means of deactivating the MDS on your HEMI. This method doesn’t require any tools, and it doesn’t reprogram or modify the ECU- Engine Control Unit.

  • Put your truck in drive
  • Release your parking brake
  • Go to your steering wheel and push the gear down until it gets to 8
  • Leave your truck on 8, and you can drive around without your truck going on the ECO mode or the MDS being activated
  • You will have to repeat this process or steps every time you get in the truck or put it in park.

Don't know if this will work on 392 but might be a stop gap measure until you find a more permanent solution.
 

How To Disable MDS on Hemi Without The Use of a Tuner​

This option provides a temporary means of deactivating the MDS on your HEMI. This method doesn’t require any tools, and it doesn’t reprogram or modify the ECU- Engine Control Unit.

  • Put your truck in drive
  • Release your parking brake
  • Go to your steering wheel and push the gear down until it gets to 8
  • Leave your truck on 8, and you can drive around without your truck going on the ECO mode or the MDS being activated
  • You will have to repeat this process or steps every time you get in the truck or put it in park.

Don't know if this will work on 392 but might be a stop gap measure until you find a more permanent solution.
Doesn’t work on our Jeeps….at least not mine
 
The MDS on my 392 with Tazer mini is not displaying the 4cyl dash light or it’s not actively working. Anyone experience this? I’ve been in 8th and hiway speed and with flat or downhill slope and under no load my current MPG will go above 35-40 with light constant pedal and I’d assume that was MDS but not sure because 4cyl light not coming on and it was before Tazer install. Thanks
 
The MDS on my 392 with Tazer mini is not displaying the 4cyl dash light or it’s not actively working. Anyone experience this? I’ve been in 8th and hiway speed and with flat or downhill slope and under no load my current MPG will go above 35-40 with light constant pedal and I’d assume that was MDS but not sure because 4cyl light not coming on and it was before Tazer install. Thanks
Mine still goes into 4cyl with tazer installed, but I have yet to get it to come on if offroad+ .
 
Don’t think it will in OR+
 
Manuel mode shifting will disable 4cylinder mode.
 
Does that mean if paddle shifters are engaged? I can’t get it to work in normal Drive mode.
 
Don’t think it will in OR+
Some people have said their's would go into 4cyl in OR+, but I haven't been able to duplicate it. I would love for more people to chime in on this. Do some of the jeeps have a different calibration?
 
Some people have said their's would go into 4cyl in OR+, but I haven't been able to duplicate it. I would love for more people to chime in on this. Do some of the jeeps have a different calibration?
Mine doesn't go into 4cylinder in OR+ only way I've gotten it so far is Manuel shift mode.
 
I’ve seen mine go into 4cyl in OffRoad+ very briefly, literally 2seconds. Wasted feature for sure
 
Are you on the correct page to see 4 cylinder mode? I rarely see it but I only think it shows up on one of the two slightly different fuel economy information pages.
 
Are you on the correct page to see 4 cylinder mode? I rarely see it but I only think it shows up on one of the two slightly different fuel economy information pages.
Mine shows up on either fuel economy page but those are the only 2 places I've seen it
 
Correct, mine will only show up on one of the fuel mileage screens and it doesn't take much for it to go away.
 
It official with pictures to prove it. MDS will switch to 4 cylinder mode when off road + is active and it shows on both of the slightly different fuel mileage information pages.

IMG_7691.webp
IMG_7692.webp
 
Ok I didn’t check to see if it came on in those screens. I thought it came up while in speedometer main page screen 1
 

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