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Old 09-25-2011, 12:32 AM
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spymac spymac is offline
Dodge Ram Forum Senior Member
Join Date: Sep 2011
Location: Central Cali
Posts: 133
Gender: Male
Vehicle: 2011 Ram 1500
Trim Level: Express
Color: Deep Water Blue Pearl
Engine: 2009-2012 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
spymac is on a distinguished road

Yep it's got it. I picked up my express a few weeks ago, noticed the MDS drone on the way home but it wasn't that bad with the stock exhaust. Switched to a Mufflex exhaust using the 14" magnaflow muffler last week and the MDS drone is very noticeable now. Using tow/haul mode switches it off and also manually shifting. Here is a quote lifted from another thread:

This is direct from the chat with the Ram Hemi Engineers.

To disable the MDS, put your shifter from D to 5 (as displayed on the EVIC or cluster). With the console shifter, this is just one hit to the left. With the column shifter you need to push the +- button - one time.

Your trans will still shift up and down automatically through all the gears.

Tow/haul button is not the correct method.
It doesn't sound that great when MDS is active but it didn't stop me from getting an exhaust. I wouldn't say it sounds horrible. MDS is usually only active while cruising so you're not on the throttle enough to really notice and after a week it didn't bug me that much.

What exhaust systems are you looking at? I'm very happy with my Mufflex system.
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