Funny you mention this because since I have owned my 2012 Grand Cherokee Altitude 5.7 HEMI it has seemed the MDS kicks in regardless of the tune being applied or not. I tried the Diablo tune and the 91 Tune which I am currently running for daily driving. These Jeeps are really irritating because ...

try this, see if it feels any better.
Thanks I will give that a try when I get home tonight! I appreciate the continued help with this!

hope it does feel better. you're welcome for the help.

took a look at the trans side of your tune, you have similar trans tables to a 2012 Ram. have had some ...

white_lightning wrote:try this, see if it feels any better.

Thanks I will give that a try when I get home tonight! I appreciate the continued help with this!

Okay so here is my backup and last tune files. Let me know if you have any suggestions or see anything wrong. Thanks!

Thanks I will upload the tune when I get home from work today...

white_lightning wrote:Mears148,

post your last tune written so I can see how the throttle boost is getting applied to the tune. depending on how it's getting changed, a tweak may help.

custom trans tune may help too.

How do I get that information so I can post it? Sorry I am new to all of this. I appreciate the help!

I actually already have the throttle boost at +15% and I like it better but there is still a huge dead spot in acceleration on these Jeeps. The fish bite symptom I am referring to is well known on the internet and makes me want to trade this thing in for something else. It almost seems like MDS is ...

I was wondering if anyone had a response to this post? I have a 2012 Jeep Grand Cherokee 5.7 and am also getting the strange surge when first taking off and then my Jeep falls on its face and has no pull in 2nd or 3rd and then pulls again after that. Kind of getting the same "fishbite" I used to get ...