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.
Perfect 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.
Are 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.
Popular 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.
With its triple defector design, the Flowmaster 40 Series Delta Flow cranks out a more audible tone than the Pro Series, but is tailored more for everyday driving. It’s a design that’s a few decades old at this point, so people have had plenty of time to prove that the Delta 40 can enhance performance without getting too wild sound-wise.
If you want a mean, deep and aggressive sound, then the Flowmaster Super 40 Series is the one for you. It can handle high outputs while keeping drone levels lower than what’s coming next. The Flowmaster Super 40 Series sports a thicker case than a standard 40 or 44. This makes the Super 40 Series perfect for giving your street machine a muscular attitude without being overly loud.
The 40 Series is the granddaddy of Flowmaster, and for decades it’s been the standard that all chambered mufflers are compared to. But, depending on how modified your car is, the 40 may cause a lot of rumbling and droning inside the cabin – a small price to pay for that classic muscle car sound we all know and love.
It isn’t easy to improve on a classic, but that’s what Flowmaster has done with the Super 44. A modern redesign of the 40 series, the 44 performs better thanks to its reworked internals: more power and a modern sound. It’s the iconic Flowmaster sound with a new-school twist. And comparing the Flowmaster 40 vs 44, the Super 44 would generally perform better on a dyno. On the road, the only difference you’ll notice is the sound.
The tiny Super 10 is one of the loudest little metal boxes around for big sound. It was born on the racetrack and fits where every bit of torque and horsepower matter. On the street, you’ll take your chances with the locals, but everyone will know you. It’s safely one of the loudest little metal boxes on the planet – at just 6” x 4”, this beast was born of the racing mufflers of old. We’re talking real racing here, not that light-to-light stuff.
We’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?
We’ve got you hooked up! Here’s a Flowmaster muffler size and sound chart to get your juices flowing.