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Muffler - Exhaust System

Home > Automotive Repair Mechanics > Muffler - Exhaust System

Automotive Excellence Inc. is the premier muffler and exhaust repair and installation facility in Orange County. We have the most experienced technicians and the friendliest representatives. Whether you are looking to upgrade to a performance muffler, cat back exhaust system or need us to replace a damaged muffler or tail pipe, call us for an appointment. Our work speaks for itself, see examples of the quality work we do by visiting the customer cars page. We look forward to meeting you and giving you the best service and auto repair experience in Orange County.

Call us today 714-841-1285.

How do the muffler and exhaust system work?

If you've ever heard an engine running without a muffler, you know what a huge difference a muffler can make to the sound of your vehicle. Inside a stock style muffler, you'll find a set of tubes and chambers. They are designed to reflect the sound waves produced by the engine in such a way that they partially cancel themselves out. This technology works well to reduce most of the sound coming from the engine.

Internal view of typical style muffler

view of chamber muffler - Flowmaster style

One important characteristic of mufflers is how much backpressure they produce. Because of all of the turns and holes the exhaust has to go through, mufflers like those in the previous section produce a fairly high backpressure. This subtracts from the power of the engine.

Performance mufflers use different technologies and designs.

Performance mufflers reduce backpressure. One type uses only absorption to reduce the sound. On a muffler like this, the exhaust goes straight through a pipe that is perforated with holes. Surrounding this pipe is a layer of insulation that absorbs some of the pressure pulses. A steel housing surrounds the insulation. These mufflers produce much less restriction, but don't reduce the sound level as much as conventional mufflers.

Cut away view of insulation style muffler

Free flowing muffler - Magnaflow style

Another type of performance muffler uses chambers to help accelerate the exhaust gasses. These mufflers do not have any sound absorption materials and have a deep and aggressive sound. The sound will vary with the size of the muffler and the number of chambers. As a general rule, the smaller the muffler louder it will be.

Flowmaster style chamber muffler

Inside view of Flowmaster muffler