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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