Flowmaster Muffler Comparison Guide


What is a muffler? Your stock muffler is made for one thing, to control or silence the sound of your engine so it meets a regulated standard decibel reading. 

Unfortunately, stock mufflers have become so good at their job, auto manufacturers have resorted to the sick practice of playing fake engine sounds over your car speaker systems to convince you you’re not driving an EV. And that’s sad. However, there’s a prescription for that sickness, and it’s called Flowmaster.

Regardless of your ride or its age, Flowmaster has you covered. Flowmaster mufflers have been used to give a louder voice to diesels, domestics, trucks, and cars. But Flowmaster isn’t only about adding that basso profundo to your tailpipe. They also provide a smoother flowing exhaust note and performance to any ride with a complete list of mufflers ranging from mild to aggressive. Scroll to the end for a Flowmaster muffler chart that organizes Flowmaster loudest to quietest.

Let’s check out Flowmaster’s most popular mufflers to help you find the series that’s best suited for your ride.

Flowmaster Super 50 Series

Flowmaster Super 50 Series MufflerPerfect for a daily driver, the Super 50 Series gives off a mellow tone at idle and is noticeably louder than your stock system when you stomp on the gas. It creates a nice deep hum – especially when you’re on it – but you can still talk in the car, even on the highway. The three-chamber design and large footprint allow this muffler to handle high-output engines without droning at speed. Your passengers might not think you modified the exhaust at all.

Flowmaster 50 Series Mufflers

Flowmaster Delta 50 Series

50 Series Delta FlowAre you looking for a performance growl without hasty words from your neighbors? Well, look no further than 50 Series Delta Flow. Think of it as a Super 50 with a bad attitude. Where the Delta differs from the Super is volume – Flowmaster Delta 50 mufflers have a similar three-chamber design to the Super 50, but with a thinner case and more baffles for added resonance, helping the Delta 50 create a little more noise that’s easier to activate.

Flowmaster 50 Series Delta Flow Mufflers

Flowmaster Pro Series

Flowmaster Pro Series MufflerPopular in the diesel community, the Flowmaster Pro Series muffler stands apart with its laminar flow design. There are no baffles to restrict flow and no fiberglass packing to blow out over time. That ceramic layer helps keep temperatures down, meaning this muffler can be mounted in tight spaces where heat is a concern. The Pro Series has what could be called a moderate sound. It’s stronger, deeper, and more present than a 50 Series.

Flowmaster Pro Series Mufflers

Note: Droning is likely beyond this point in the Flowmaster lineup.

Flowmaster Delta 40 Series40 Series Delta Flow

Flowmaster 40 Series Delta Flow Mufflers

Flowmaster Super 40 Series


Flowmaster 40 Series

Flowmaster Original 40 Series Muffler

Flowmaster Original 40 Series Mufflers

Flowmaster Super 44

Flowmaster Super 44 Series Mufflers

Flowmaster Super 10

Flowmaster Super 10 Series Mufflers

Flowmaster Outlaw

Flowmaster Outlaw MufflerWe’ve reached the pinnacle. For loud town and performance, the Outlaw is the loudest Flowmaster available. Made for the track, we can only promise love from the fans for this straight pipe muffler. At the strip mall, you’ll be on your own. Run a Flowmaster Outlaw on your tubbed-out supercharged Nova and deafen the crowd at the local dragstrip. Or the local mall, it’s up to you.

How do I choose the best Flowmaster muffler?

Flowmaster offers mufflers for a wide variety of applications. Remember that your sound is dependent on any modifications you’ve made and a Flowmaster can either expand or restrict your performance. Check out our exhaust customer reviews  and vids to get the one for you. And go to a cars and coffee to hear the sound in person when you can. If your car is stock, chose a Flowmaster exhaust for the street and you’ll see some excellent gains and a throaty performance sound. 

Can I see a Flowmaster sound chart?

Flowmaster Muffler Compare Chart

We’ve got you hooked up! Here’s a Flowmaster muffler size and sound chart to get your juices flowing.

Shop Popular Flowmaster Mufflers

Shop for Flowmaster Mufflers
Choose the best Flowmaster muffler for your car, truck or SUV.



  1. What is the least droning flow master muffler for a 2018 Chevrolet Impala with 3.6 engine? One that doesn’t sound like a really sick 6 cylinder engine. Thanks

    • Hey Dan,

      If you take a look at this chart here, you can see their mufflers sorted by volume and how much interior resonance or drone there will be. I would say you would be safe with a 50 Series Delta Flow, or a 70 series if you want to keep things more mild but still have a little bit of a growl to it. If you want to lean more aggressive, I wouldn’t go higher than an HP2.

      Flowmaster sound chart

      Hope this helps!

  2. hello, could you recomend a flow master muffer for a 2020 Dodge Challenger R/T Scat Pack with a 392 V8 VB SRT HEMI MDS Engine (485 Horsepower / 470 lb.-ft of Torque). I want it to sound like a muscle car but still be able to talk in car.
    thanks, bob

    • Hey Bob,

      I think a good option for you would be the Flowmaster Delta 50 HD. It definitely will pack that muscle car sound, but won’t wake the neighborhood or drone out any hope at a conversation on the freeway. If you want something a little more aggressive, but still not obnoxiously loud, then the FlowFX is a good choice as well, but that would be as aggressive as I’d go.


  3. What Is the best muffler for a Dodge Charger 2019 sxt with a v6 Engine? I want it to sound good but not to loud on the inside where I cannot hear conversations on long trips.

  4. Hi been doing alot of research i have a 2016 ram 1500 crewcab 5.7 hemi i wanted the super10 and heard a video and the drone seemed really bad. I want this muffler to make my truck loud though i heard another video of the super44 and it seemed to quiet. Based on the chart the 44 is louder than the original 40. I was leaning towards the original 40series i am keeping my stock dual pipes and keeping resonators on does anyone have any suggestions? I want to be able to hear the rumble from inside my house when i start it. Thanks for any help

    • Hey Dave,

      It’s really hard to tell how loud different mufflers and catback systems are in video, especially to gauge drone. The Super 44 is pretty loud, I had one on my Wrangler. It also had more drone than I really wanted. I think the original 40 is a better pick, as it will still give you plenty of volume, but not wake up all the neighbors every time you start it up. I definitely don’t recommend the Super 10 for you, those are insanely loud and drone like crazy.

      Hope this helps!

  5. Hi looking for flowmaster on a 2020 gmc 1500 At4 6.2L. Definetly want the aggressive low growl but without the drown and less noise in the cab. The wife says she still wants to have a conversation with me. lol How would either the 4o series delta flow or the Super 40? Would the 50 delta not be enough for what I am looking for?

    • Hey Christian,

      In my experience I would say the 40 series can be a little aggressive in terms of drone and being able to have a conversation — especially with the Super 40. I would say a 50 series or HP2 would be the way to go. They’ll give you the growl you want, especially under load, but aren’t so harsh on the drone or vibration into the cabin. The 50 series Delta Flow is one of my favorite recommendations, as it gives a good rumble when you want it, but is never grating at freeway cruising RPMs.

      Hope this helps!

  6. Any recommendations for a 1997 Chevy Suburban C2500 7.4L V8 Big Block 454? I would like it to be as loud as possible while still being able to talk to my son in the 2nd row on the highway. Thanks in advance!

    • Hey Mitchell,

      I’d say a Flowmaster 40 Delta Flow or Super 40 would be about as loud as you would want to go while being able to talk still on the freeway.


  7. I have a 2020 Dodge Ram 1500, Hemi. I would like to remove the stock muffler and replace it with a Flowmaster. I have heard that they are bad on drone and would like to keep the quietness of the cab but at the same time give that distinct Flowmaster sound. What do you think would be my best bet? I just want it to sound different than stock.

    • Hey Brian,

      If you’re looking to get a good sound without drone on the highway, I would stick with something in the range of the 50 series Delta Flow. That will give you that deep sound without the grating drone, and won’t be too loud.


  8. got a dodge ram 1500 sport 2017 curious what I should get for my truck! I was looking at the flow master super 44 or outlaw, are my top 2 but was also looking at the super 10 .. im stuck in a bubble on which to get

    • Hey Johnny,

      Those are good choices if you want it to be loud and aggressive! I would go for the Super 44 of those two. If you want it still loud but not quite as aggressive, the regular 40 is a good choice, and then 50 or 50 Delta flow for something more mild.


  9. hello. I am glad that you reply. I have a 2020 gmc sierra at4 6.2. I am tossed between a super 50 and a delta flow 50. I like outside noise but want it quiet in the cab. how do they differ.

    • Hey Jeff,

      The Delta Flow 50 is a little more aggressive while the super 50 is more on the mild side. Neither will be a problem as far as drone is concerned, if you want it to be a little more aggressive on the outside, I would definitely go with the Delta Flow.


    • I have a 2016 Dodge Charger RT 5.7L. I deleted my resonators and want it to be deeper and louder. What do you recommend and what will be easy to install?

      • Hey Keith,

        Replacing your mufflers with something meatier would be the first step, if not a cat-back system altogether. Flowmaster’s 40 series and down are their more aggressive systems, depending on how loud you want to get.


  10. I just purchased a 2021 Chevrolet Silverado 1500 Z71 Trail Boss with a 5.3. I plan on purchasing the afm disabler. I want it loud – not ridiculously too loud, but when it starts you hear it and when driving you can hear it also. Recommendations???
    Thank You!

    • Hey Ben,

      If you want to make sure you can hear it, but not so loud that you’ll be bothering your neighbors, I recommend the Delta 50 series for the 5.3. They sound great, have a satisfying rumble, and won’t be getting you in any trouble. If you want a little more aggressive than that, I would go for the 40 series. There should be plenty of clips on YouTube of both options with the 5.3.


  11. I have 2013 tundra crewmax and looking for for a good sounding deep idle that you can hear most muffler are quite at this point .(idel) looking at 40 original series vs super 44. PS. witch one is really loader between the 2

    • Hey Daniel,

      The Super 44 is a bit louder than the standard 40 and Super 40. If you really want people to hear you coming, the Super 44 is the one to get, though the 40 is plenty loud as well.


  12. Would the flowmaster hp2s sound good on a 2020 dodge durango rt? Replace the mid muffler with 2 hp2s and keep the rear resonators?

    • Hey David,

      That would be a great combination, actually! I like the HP-2s, they’re aggressive sounding without waking the neighbors every time you need to leave for work. I think these would work well with or without the resonators depending on how loud you want the exhaust. To keep it a little quieter I would keep them.



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