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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 12-21-2009, 04:49 PM   #1
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Whats the difference between a resonator and a muffler?

This is probably a stupid question. Flame suit on just in case.

Does one restrict airflow more than the other, or is one quieter than the other?

The reason I ask is because I am putting the HPF straight pipe exhaust on my M3. I wanted to put a small muffler on my aftermarket X pipe. I see that some xpipes are resonated. Wanted to know if it would be better to just slap a resonator or muffler on the x pipe. My car is NA and i know the HPF will be real loud hence why I want to muffler the X pipe.

TIA guys!

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Old 12-24-2009, 04:57 PM   #2
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I am told that Muffler is for volume and resonator is for rasp idk

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Old 12-24-2009, 05:04 PM   #3
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Found this on mufflers and resonators. It should help
Originally Posted by Born Again View Post
relax kiddies ur 10 year old car is still god on this forum
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Old 12-26-2009, 02:35 AM   #4
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A muffler in it's most simple form is simply designed to reduce volume of the exhaust. Frequently this is done by passing the exhaust gas through, or surrounding it in a combination of baffles, perforated mesh, and/or steel/ceramic wool.

A resonator is designed to amplify or cancel specific frequencies of sound. Usually though relatively precise placement of baffles and calculated volumes.

Quite often the terms are mixed together. In the case of an E46 exhaust system, if you look at the it, there will be 3 "chambers". Two will have a stamped and flattened design, and if you tap it with a piece of metal, it will have a pretty dead "thud" two it. There will be one resonator, and it will be a neater looking oval cylinder, and if you tap it with a piece of metal, it will have a little bit of a ring or higher pitched tap.

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