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MUFFLERS

TAPP has a full array of aftermarket performance mufflers certain to meet the needs of any customer. Whether you are a hot rodder looking to tear down the strip with a roaring, hyper-aggressive straight-through muffler or a soccer mom looking to replace the factory muffler on your daily driver with a smooth chambered muffler, TheAutoPartPros.com has you covered! 

What does a high performance muffler sound like?

Depending on the muffler, the sound of high performance can range from a low, throaty growl to an ear-splitting roar, and every tone in between. The perfect muffler will deliver just the right purr, roar, or rumble to properly support your vehicle’s performance and appearance. 

Muffler Principles

The primary function of a muffler is simple - noise reduction. When internal combustion takes place, the engine expels exhaust gases in the form of high pressure pulses. These pulses create powerful sound waves, and the muffler's job is  toi reduce this powerful sound to a tolerable level.

While the job description is simple, the way in which a muffler performs its main task is much more complicated. Ideally, an aftermarket muffler will provide a good performance exhaust tone without creating too much backpressure. Backpressure robs your vehicle of power. Depending on the style, a muffler uses some combination of baffles, chambers, perforated tubes, and/or sound deadening material to achieve this goal. Muffler manufacturers configure these components in a variety of ways to produce different exhaust tones. To help you choose the right muffler for your sound and performance tastes, please use this guide:

1. Find the Right Fit: Inlets, Diameters & More

 First, you’ll need to answer a few questions about your existing exhaust system:

  • Is it a single or dual system? This will help you determine the number of inlets you need on your muffler. For example, a single exhaust will require a single inlet on the muffler. If you’re merging a dual exhaust into one muffler, you’ll need a dual-inlet muffler.
  • What is the exhaust pipe diameter? You’ll need to match your inlets, and in some cases outlets, to match your existing exhaust diameter.
  • How much room is available for the muffler(s)? You’ll need to make sure the outside dimensions of your muffler allow for proper clearance under the vehicle. The right length will ensure easy installation and proper clamping; the right casing size and shape will allow it to fit within the confines of your vehicle’s undercarriage.

2. Choose a Style: Chambered vs. Turbo vs. Straight-Through

The three main muffler styles are chambered, turbo, and straight-through. Each style has its own set of benefits and drawbacks.

Chambered mufflers provide decent noise reduction for the street while still creating that classic American Muscle growl, making theim ideal for street machines and muscle cars. Chambered mufflers are designed to reduce exhaust noise while providing a throaty performance sound for the street. Chambered mufflers use internal chambers to produce a specific exhaust note. These chambers come in different lengths and sizes to create the tone, and mufflers can include just one chamber or multiple chambers. They use a series of inner chambers that are configured at specific lengths to reflect sound waves against each other. As the sound waves bounce into one another, they cancel each other out, causing a reduction in exhaust noise. The exact exhaust tone and noise reduction of chambered mufflers depends on the size and number of the chambers. Many manufacturers use sound-deadening baffles or inserts within the chambers to further reduce or alter exhaust sound.

Turbo mufflers usually use a set of perforated tubes, which guide the exhaust gases through the muffler in an S-shaped pattern. Although this design is more restrictive than other styles, the S-design allows the gases to travel through more tubing for better noise reduction. Ideal for street applications, some turbo-style mufflers also incorporate a sound deadening material, which is packed around the tubes for increased muffling.

Straight-Through mufflers, otherwise referred to as glasspacks, are designed to allow maximum airflow - and horsepower. These mufflers feature a straight, perforated pipe wrapped in sound absorbing material such as fiberglass packing. Ideal for racing, this setup allows exhaust gas to flow through the pipe with very little restriction but provides much less sound reduction than chambered mufflers. The straight-through design also tends to be more compact than other muffler styles, making it a popular choice among street rodders and custom car builders.

3. Consider Construction: Aluminized vs. Stainless Steel Mufflers

Mufflers must be built tough to handle high pressure exhaust gases, absorb impact from road debris, and resist corrosion. Manufacturers typically use a three-layer body consisting of an outer shell, an inner case, and a slightly insulated layer in between. The muffler body is usually made of aluminized or stainless steel. The advantage of choosing an aluminized steel muffler is cost. Aluminized steel is generally less expensive than stainless steel; however, stainless steel mufflers offer vastly superior corrosion resistance, durability, and life span than the aluminized steel versions.

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