I have ran mine in tow haul mode since I got mine back in 17 with 57k. I am at 161k now and its been fine.
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Just so everyone is clear here, MDS disabling in the PCM software is the option I used (sending in the PCM and having a custom tune to disable it)You really have no clue on how they turn off mds mode in the pcm do you , this is like your theory the Pulsar "blips" the throttle to disable mds .
I'm amazed at how uninformed you actually are
I'm out , as i learned along time ago , you can't fix stupid , and you sir are beyond fixing![]()
Tow/Haul mode also works for older Gen 4s, but I forget the cutoff year before that changed. I know in my 2019 the Tow/Haul did not disable it.I have ran mine in tow haul mode since I got mine back in 17 with 57k. I am at 161k now and it’s been fine.
Little tidbit for you , the way they're turning off mds in your pcm is by enabling "manual mode " .You seem to think they're re-writing the pcm code .Just so everyone is clear here, MDS disabling in the PCM software is the option I used (sending in the PCM and having a custom tune to disable it)
The other way “most” people get around it is by using the gear +/- buttons to disable it.
If you looked at the shift map tables in the TCM you would see that they are different when the truck is running in normal “drive” mode vs “manual” mode with the gear buttons. All this is fact, look it up on the ZF8 tuning maps for your truck if you prefer to learn from someone else.
Stop being a troll and stifling the growth of the community with incorrect information.

Little tidbit for you, you’re wrong. How could they also change the speed at which this enables if it’s a change to manual mode?Little tidbit for you , the way they're turning off mds in your pcm is by enabling "manual mode " .You seem to think they're re-writing the pcm code .
Curious on how you think they're turning off mds mode in the pcm , for $250![]()

Ahem... it's Mr. Snarky now... haven't you heard?I have a feeling this Wild Guy isn’t very smart…I have yet to see him say something worth reading. Thanks Bmags though for thoroughly explaining this and sharing the facts.
Watch these 2 video's,they'll draw you a picture,you might be able to understand,lolI have a feeling this Wild Guy isn’t very smart…I have yet to see him say something worth reading. Thanks Bmags though for thoroughly explaining this and sharing the facts.

I'm still waiting for the reasoning behind the proper MDS disable (to replace all MDS hardware with non-MDS hardware) for removing/disabling/deleting MDS from the experts. Please enlighten me oh great and wild one.Watch these 2 video's,they'll draw you a picture,you might be able to understand,lol
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5.7 HEMI Lifter Failure Could this FIX the lifter issue FOREVER?
Hey guys, revisiting the 5.7 HEMI lifter failure video I made a couple months ago. I wanted to address many off the comments that I got from the last video, ...www.youtube.com
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Is MDS Damaging Your HEMI? The Answer May Surprise You!
I feel like MDS has been unfairly made the culprit for the lifter failures we see on Gen 3 Hemi engines. In this video I explain exactly how the system works...www.youtube.com
Watch these 2 video's,they'll draw you a picture,you might be able to understand,lol
![]()
5.7 HEMI Lifter Failure Could this FIX the lifter issue FOREVER?
Hey guys, revisiting the 5.7 HEMI lifter failure video I made a couple months ago. I wanted to address many off the comments that I got from the last video, ...www.youtube.com
![]()
Is MDS Damaging Your HEMI? The Answer May Surprise You!
I feel like MDS has been unfairly made the culprit for the lifter failures we see on Gen 3 Hemi engines. In this video I explain exactly how the system works...www.youtube.com
If you watch the video's,you'll understand the oil flow path to the lifters,and how mds benefits the lifters when it's engaged.Little tidbit for,when you delete mds via the tune,you also cut oil flow to the lifters,which is explained in the video's.Kind of curious how you think the mds solenoids operate,as you don't really comprehend oil flow through the solenoids,and what they do to the oil supply reaching the lifters do you.I'm still waiting for the reasoning behind the proper MDS disable (to replace all MDS hardware with non-MDS hardware) for removing/disabling/deleting MDS from the experts. Please enlighten me oh great and wild one.

The engine is designed to cut oil to the solenoids in non-MDS mode from the factory!! So the engineers that are responsible for designing the MDS engine have deemed that to be an ok mode of operation (by Tow/Haul, manual mode, etc). Clearly if it was a true lack of oil in the design you would fail long before the warranty expired and this would be a much bigger issue. Do yourself a favor and search on the forms how many people would rather their engine run below the "full" line than above it. People are likely hurting their engines for a general overall lack of lubrication, independent of engaging MDS or not.If you watch the video's,you'll understand the oil flow path to the lifters,and how mds benefits the lifters when it's engaged.Little tidbit for,when you delete mds via the tune,you also cut oil flow to the lifters,which is explained in the video's.Kind of curious how you think the mds solenoids operate,as you don't really comprehend oil flow through the solenoids,and what they do to the oil supply reaching the lifters do you.
You do realize when you delete mds via the tune,you also cut oil flow to the lifters, i don't know in what world you live in,but usually cutting oil flow to a moving part is determental to the life of said moving part.Why do you think Ma Mopar gets rid of the solenoids on an actual non-mds engine,it's so the oil supply feeding the lifters becomes a continous oil flow
But i digress,you're to smart to watch the video's,and actually learn something.
Like i said,you're to fast for wisdom to catch up to you,![]()
So you figure cutting oil pressure to the lifters is beneficial thenBecause it's cheaper to build the engine with less moving parts if those parts aren't needed! By golly George why on earth would they put in all that stuff if the engine is not able to enable it!?!
I might as well talk to the wall,as i get a better response from it,then i do from you.You smart like doorknob dude
Yes, cutting oil pressure was designed into the engines from someone that went to college for engine building. They worked closely with other engineers that studied fluid dynamics. Seems to me they would be a more credible expert than a random unknown YouTube poster that had an engine issue.So you figure cutting oil pressure to the lifters is benficial thenI might as well talk to the wall,as i get a better response from it,then i do from you.You smart like doorknob dude
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In what world does cutting oil flow to the lifters benefit them,clue me into how that worksYes, cutting oil pressure was designed into the engines from someone that went to college for engine building. They worked closely with other engineers that studied fluid dynamics. Seems to me they would be a more credible expert than a random unknown YouTube poster that had an engine issue.

As was mentioned by others in this thread, there are certainly benefits to changing some parts/parameters on any given engine. For instance, higher idle speed would make sense to me as an attempt to lubricate better. Any of those things MIGHT help SOME people SOME OF the time.If you think he's an unknown youtube poster,you've really been under a rock lately haven't you.
Still waiting for your thoughts on the hellcat pump upgrade,lol
Holy fluck Batman,now that's a back pedal if i ever seen oneAs was mentioned by others in this thread, there are certainly benefits to changing some parts/parameters on any given engine. For instance, higher idle speed would make sense to me as an attempt to lubricate better. Any of those things MIGHT help SOME people SOME OF the time.
The issue I have is that you say to delete MDS the right way someone should disable in a tune AND THEN ALSO replace all their hardware. But, if we know that non MDS engines have lifter and cam issues just like the MDS engines, there is ABSOLUTELY NO REASON to replace hardware that isn't broken. If someone was concerned and trying to prevent the tick then by all means do whatever other mods tickle your fancy... but for you to tell someone the "right" way to do something because that's what they feel like (and leave out the facts) that is just plain wrong.

