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Old 08-28-2016, 08:13 PM   #1
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Exclamation Is there a good performance muffler that's quiet?

I currently have a single 2-chambered Flowmaster (3" in/out) dumped under the bed right in front of the axle on my 04' Dodge Ram 1500 Hemi quad cab. For driving around town, and even on the highway it sounds awesome......nice deep idle, pretty quiet when cruising on the highway, and really screams when you mash the pedal. I tow a 25ft ski boat with my truck, and short trips to the lake (1 hour) don't really bother me too much, but the exhaust can get a little loud at times when you starting getting into the gas going up hills.

Now that we picked up a small 19ft camper trailer, and I've been going on some longer road trips with the family......and after a few hours, the exhaust note just gets annoying. It's not bad when you are on flat ground, but going up hills when the motor is spinning higher rpms just gets annoying.....I'm tired of hearing it (so are the wife and kid).

I'm going to cut the Flowmaster off and replace it with something else. I don't want to lose any power, but I do want to lose the noise and interior resonance. What should I try? Magnaflow? Borla? I want something that's quiet.....something that won't get annoying after pulling a trailer for 6+ hours.
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Old 08-29-2016, 06:15 AM   #2
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Borla. You can still get good power but with out the killer droning.
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Old 08-29-2016, 06:37 AM   #3
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The borla's on my Lincoln LS WERE nice but it may be more than just the muffler - might be location too - I would dump it out back, not under the bed...

you might also as consider a complete downpipe back kit...
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Old 08-29-2016, 06:54 AM   #4
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Good quiet muffler

I just removed the same Flo Master with 3" Stainless Pipe also from my Ram 1500. Not a Hemi, but a simple 5.3 liter.
I removed it after only 5000 miles. (2 1/2 years)
As you state noise level wasn't bad top end cruise, but deafening under load, or higher RPM.
The Dodge is my "spare" truck, it did sound cool, but I got tired of it, especially early morning archery hunts, accessing crop field edges.
I first put it on for improved performance for pulling my TT.
The Exhaust Speciality shop advised that I would not see any performance improvement, but maybe slightly better gas mileage (which was not my goal anyway).
I needed to keep the new 3" Stainless exhaust in/out so the only option was a truck style muffler, louder than a stock Ram but definitely quieter than Flo Master. They called the muffler a 180 ? Hope this helps. Wish I could get more performance, 5.3 (1995) 3spd auto Trans not sure gears 330?
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Old 08-29-2016, 11:24 AM   #5
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Quote:
Originally Posted by johnboytoo View Post
might be location too - I would dump it out back, not under the bed...
X2! Before cutting off the muffler and buying something new I would see about just dumping the pipes out behind the rear tire or out the back like johnboytoo said. Having the pipes dump out under the bed just makes it that much louder in the cab.
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Old 08-29-2016, 01:20 PM   #6
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Good performance muffler

Just to add to my pre us post:
My 3" stainless exhaust system terminated and exited behind the rear tire, and was still too loud.
Biggest thing was I saw no increase in performance by having Flo Master.
When I went back and had it changed back last week, I got an "I told ya so" from the muffler shop owner.
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Old 08-29-2016, 01:51 PM   #7
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Well, it DID tell you so

but no amount of youtube videos, etc will let us know how it sounds on OUR vehicle...
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Old 09-06-2016, 06:34 PM   #8
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Well, over the weekend I got rid of the 2-chambered 40-series Flowmaster and replaced it with one of the longer 18” bodied Magnaflows with 3” in/out. Instead of just dumping it under the bed in front of the rear axle, I ran it out the side in front of the rear tire. It’s definitely quieter than the Flowmaster was when there is no load, or a light load on the motor…much quieter. When just driving the truck around town, it’s definitely quieter.

But, I pulled the boat over the weekend, and when you are hard on the gas and the RPM’s are up over 3000 or so, I’d say it’s just as loud as the Flomaster was as far as overall volume, but the “tone” is smoother and deeper, and not as raspy sounding. It’s still too loud for my taste, the lower deeper tone of the Magnaflow actually bothers me more than the thin raspy sound of the Flowmaster. The one thing that I did notice was that with the Magnaflow, on straight and flat sections of highway running at 65mph….according to the MPG display on the truck, the Magnaflow muffler picked up 1-2MPG vs. the Flowmaster. I guess that just goes to show how restrictive that Flowmaster really was.

I’ve ordered some more 3” pipe sections, so my next step is to run the exhaust all the way out the back dumping behind the rear passenger tire….just like a standard oem truck exhaust. I’m hoping this will do the trick. I kind of like doing exhaust work, it gives me a chance to break out my mig welder and run some wire through it.
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Old 09-06-2016, 06:50 PM   #9
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….according to the MPG display on the truck, the Magnaflow muffler picked up 1-2MPG vs. the Flowmaster. I guess that just goes to show how restrictive that Flowmaster really was.

[/QUOTE]

Before giving the Magnaflow all the credit, you should take into consideration -- wind, or lack of it.
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Old 09-06-2016, 07:09 PM   #10
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Quote:
Originally Posted by Lloyd View Post
….according to the MPG display on the truck, the Magnaflow muffler picked up 1-2MPG vs. the Flowmaster. I guess that just goes to show how restrictive that Flowmaster really was.
Before giving the Magnaflow all the credit, you should take into consideration -- wind, or lack of it.[/QUOTE]

Yes, I agree.
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