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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 08-31-2013, 01:13 PM
bennutts bennutts is offline
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Default Flowmaster Super 44 Sounds BAD! (as in not good)

Ok so i just put a si/do 2.5" Flowmaster Super 44 on my truck. It sounds like crap between 1200 and 1500 rpm. When my foot is in the throttle accelerating it sounds fine but once I let off to cruising speeds (40 mph) it sounds really bad. It almost sounds like the exhaust is out of tune if that makes any sense. Is there any reason or fix for this? I've checked to make sure everything is tight and there are no leaks. I'm at a loss
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Old 08-31-2013, 03:07 PM
robby5323 robby5323 is offline
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Sounds like flow master drone to me. That's just the nature of chambered mufflers. 1200-1500 rpm is the sweet spot I'd guess for that thing to resonate and drone like crazy.
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Old 08-31-2013, 03:27 PM
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gonefishin776 gonefishin776 is offline
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is it when the MDS kicks in??? that makes it sound like shit.

my flowmasters don't drone at all and sound great all the time. I disabled my MDS, sounded like a UPS truck with mds
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Old 08-31-2013, 03:28 PM
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Bennutts,
next time that you are doing that speed & hear that annoying noise, shift down 1 gear
that will keep the MDS from kicking in
I do it with my Ram while in areas with speed zones of 30-45 mph

I just have to remember to shift it back into High gear when i get to a highway ramp
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Old 08-31-2013, 03:40 PM
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Quote:
Originally Posted by gonefishin776 View Post
is it when the MDS kicks in??? that makes it sound like shit.

my flowmasters don't drone at all and sound great all the time. I disabled my MDS, sounded like a UPS truck with mds
exactly

when MDS kicks in its basically a 4 cylinder with an over sized exhaust, MDS off would fix that problem
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Old 09-01-2013, 03:02 PM
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So forgive me for my ignorance, but is there any way to turn the MDS off on an 08? This is truck also has an automatic transmission.
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Old 09-01-2013, 09:25 PM
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Quote:
Originally Posted by bennutts View Post
So forgive me for my ignorance, but is there any way to turn the MDS off on an 08? This is truck also has an automatic transmission.
I have no idea about the 08's bud sorry.

OP just like everyone else is saying it's your MDS making the exhaust sound like crap. I have the 44 as well with a resonator delete, and hated it when MDS was on. If you have a Tuner you can disable MDS, if not just put the truck in 5th and it'll shift up and down automatically without going into MDS mode
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Old 09-01-2013, 09:27 PM
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Yow/haul mode will turn it off. I had an 06, no cats and a flow dumped and the drone in mds was BAD and i used tow mode intown to turn it off, on the highway it wasnt that noticeable
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Old 09-02-2013, 11:39 AM
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ya u can run around in tow/haul mode or buy a tuner. I did the tow/haul method for awhile
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Old 09-02-2013, 12:23 PM
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If you want to swap out that muffler or get a tuner to turn that MDS crap off, email me. Eric@bullyperformance.com
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