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Excessive noise at 1500 RPM

tfrase

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I had a Flowmaster Super 44 installed on my 2019 Ram 1500 Tradesman (5.7L Hemi) and I'm real happy with the sound. About 1 month after the installation I noticed that it sounded like the truck was idling a little high and at about 1200 to 1500 RPM's when driving the truck it's making a vibrating like noise (almost like the rumble strips/sleeper lines on the side of the freeway). It did it for a day and then went away. About a week later it came back. Any suggestions?
 
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Nails

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High idle it shouldn’t do. That noise is probably the mds kicked in. Mine does same at certain speed and gear when in 4 mode
 

Bigjb1987

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Could be your mds kicking in and out. Mine sounds horrible if I forget to turn it off
How do you turn off MDS? As far as I know you can’t turn it off, you can turn off eco light in u connect for das light, and manual gear limit. But can’t truly turn it off.
 

Nails

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^^^^ to manually turn it off have to hit gear select on steering wheel. Set it to 8 will have to redo every ignition cycle
 

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