MDS

[rich1946]

Has anyone found an aftermarket programmer that will eliminate MDS on the 392 Rubicon? I have checked around, and thus far no luck. The dealer diagnostic equipment cannot access the MDS for modifications. Don't know how most of you feel, but having 4 cylinders run dry and cold does not sit well with me. I did find out that if you drive in manual mode, MDS is disabled.

 

[Shortcut]

Has anyone found an aftermarket programmer that will eliminate MDS on the 392 Rubicon? I have checked around, and thus far no luck. The dealer diagnostic equipment cannot access the MDS for modifications. Don't know how most of you feel, but having 4 cylinders run dry and cold does not sit well with me. I did find out that if you drive in manual mode, MDS is disabled.

I acquired a Tazer Mini and the first question I asked the support folk was about the ability to disable/alter the MDS and they responded that their engineers are looking into making that available. I also asked about the Tazer's ability to adjust the 392's governor limits and they replied that they can't touch that.

 

[Mdub79]

I've been in the performance industry for sometime and the manufactures keep making it harder to tune/calibrate these newer vehicles. As for our Jeeps and other FCA vehicles model year 2018+ will need to have the ECM unlocked and this isn't something you can do yourself it has to be sent in.

There are two companies (possibly more) that offer this service. HPTuners and DiabloSport. I have HPTuners so I would need to send my ECM to HPTuners to have it unlocked. In addition to that I would also need to install a security bypass cable that plugs into the OBDII port. After that I could then flash the ECM with the new calibration that disables MDS.

DiablSport works the same way in regards to what needs to be done in order to flash the ECM, you need a bypass cable and to have them unlock the ECM. They offer handheld tuners that have performance tunes loaded on it in addition to disabling MDS from what I can tell. My past experiences with the "one size fits all" tuners like DiabloSport is that they dont actually work that well and more times than not mess up the drivability and cause other headaches.

 

[Shortcut]

I've been in the performance industry for sometime and the manufactures keep making it harder to tune/calibrate these newer vehicles. As for our Jeeps and other FCA vehicles model year 2018+ will need to have the ECM unlocked and this isn't something you can do yourself it has to be sent in.

There are two companies (possibly more) that offer this service. HPTuners and DiabloSport. I have HPTuners so I would need to send my ECM to HPTuners to have it unlocked. In addition to that I would also need to install a security bypass cable that plugs into the OBDII port. After that I could then flash the ECM with the new calibration that disables MDS.

DiablSport works the same way in regards to what needs to be done in order to flash the ECM, you need a bypass cable and to have them unlock the ECM. They offer handheld tuners that have performance tunes loaded on it in addition to disabling MDS from what I can tell. My past experiences with the "one size fits all" tuners like DiabloSport is that they dont actually work that well and more times than not mess up the drivability and cause other headaches.

Thank you! Livernois Motor Sports unlocked and tuned the PCM of my 2018 TrackHawk and made performance adjustments to compliment the pully, injector and other changes neccessary to tune it to run on either E85 or 93 octane. Also adjusted transmission shifting characteristics in the transmissions various modes. Part of the package was the purchase of the handheld tuner device, cabling, etc. There is a shop here where I live now that works closely with Livernois and may be able to help with changes I would like to make to the 392 that the Tazer is not useful for.