BMW E90 325i Exhaust (Muffler + Resonator Delete)

Muffler Deletion Resonator Deletion AFE Stage II intake BMW E90 325i w/ sport package

How is a resonator muffler better than a conventional one?

The car that I bought recently, a 2000 Saab 9.3 convertible, came with what I was told was an "upgraded" resonator muffler. Considering that the resonator muffler is louder than a conventional muffler, why is it better?


A resonator will give the exhaust better sound by making it more crisp. Although I thik the resonator essentially loudens the exhaust rather than muffling it, but it sounds a lot better than stock. Its not better in the sense that it will not add any power.


A resonator is not a muffler, it is straight through with perforated metal tube in it.... a muffler will have a restriction, either baffles or chambers. A resonator is not better than a muffler, your exhaust system needs to create a certain amount of backpressure, a straight through resonator will not help with that.


It reduces engine and exhaust noise.

can a resonator take the place of a muffler?

I took of the muffler on my car because it was bad. while i was looking for another, i came across both mufflers and resonators. Does a resonator take the place of the muffler or go on with the muffler? I really am not sure how this works, please tell me any details that you may know and what the results would be of all options. thank you.


A resonator usually just helps the muffler make the the exhaust not as loud. Lot of smaller cars have small mufflers due to small place to put them so the put the resonator in the exhaust to make it not as loud.


a resonator helps to lessen engine noise. just a resonator will make you car noisier but because of less back pressure will have less power


there have been many configurations over the years - once upon a time, a hot set up was a dual outlet cat with two resonators, no muffler. There have been plenty of systems with one or the other, or with both. The cat helps reduce the sound a lot too, which expands your options.


Resonators and mufflers are similar, but not quite the same. Consequently, there is a time and place for both. By definition, mufflers and resonators are both sound-attenuation devices, so they're one in the same. However, by practice, a resonator is perceived as something round and compact, while a muffler is perceived as being larger and more substantial. Resonators reduce exhaust noise by 4-6 decibels, while mufflers reduce noise by more than 20 decibels, so the applications in which they are used can be very different. Resonators are small and light, so they're popular in racing classes that require some type of muffler. On the other hand, for street applications, using a resonator without a muffler typically emits more noise than people care for. If someone is having a problem with resonance, a practice becoming more popular is installing one resonator or multiple resonators in addition to a muffler, which can reduce resonance enough to where it's no longer noticeable.


Resonators will only work if you have a performance muffler which is loud by itself. You will have to install the muffler that goes under the car and not the one on the end with its own tip. The resonator usually is a large tip that has a small amount of sound deaden material in it to help lessen noise and make it deeper.

I took the mufflers off my Datsun 510 and ran dual 2' pipe with Pacesetter Monza 4" resonator tips on my car and it was pretty loud, but had a deep tone to it.

If you want an adjustable muffler that you can tune loudness and still have back pressure, get a SuperTrapp muffler tip.


you dont need both, mufflers suck

I want to add a glasspack to my car. Does the glasspack replace the muffler or the resonator?

The glasspack will either be Cherry Bomb or Flow tech. If if replace the resonator, can I leave the stock muffler on? Or vice versa.
So I'm getting the idea to replace the glasspack for the mufflers. What if the glasspack is replaced for the resonators?


If you're going to get glass packs you would want to get rid of the muffler. The glass packs acts as the muffler, just louder and a little more power. There are different styles with diff. ways to produce the back flow that is needed, it also gives it the more throaty sound.
Hope this helps


glasspack is a muffer cherry bomb is a muffer flow tech muffer


Replace the muffler with a glasspack and the resonator with a straight pipe.

What does it cost to get a muffler resonator fixed?



Call the Midas or Mieneke shop in your area. They can tell you for sure by knowing what make, model and year. Better yet, they give free estimates so you can be sure that this is all that needs to be replaced.

if i take out the stock muffler and resonator and just buy an aftermarket muffle will my car be louder?

if i take out the stock muffler and resonator and just buy an aftermarket muffler will my car be louder


if you just removed the resonator it would be louder, add a aftermarket muffler and it would be even louder or a have a better note to it (depending on the muffler)...

Muffler Resonator - News


Edward the Elephant's New Exhaust - Part 2
Edward the Elephant's New Exhaust - Part 2"In fact," continued Edward imperturbably, "the Holden muffler and resonator that I flow tested with such good results aren't even two-and-a-half inches;

Moto: 2010 Kawasaki ZX-6R
The intake resonator box and supports for the instrument panel and mirrors are unitized with the enlarged —to optimize intake volume — Ram Air duct, and more »

AC, Exhaust, Air Bag, Wheel & Other Auto Parts Manufacturing in the US
AC, Exhaust, Air Bag, Wheel & Other Auto Parts Manufacturing in the USThese include air bag assemblies, air-conditioners manufacturing, catalytic converters, engine exhaust systems, mufflers and resonators, radiators, and more »

2010 Yamaha YZ450F First Ride
Exhaust is now pumped from the back of the engine and pushed through a stainless-steel header equipped with a resonator (allows for more exhaust volume)

Moto: 2010 Yamaha YZF-450F
New “tornado-style” exhaust header with resonator efficiently scavenges exhaust gasses and helps the engine achieve its exceptional low-to-mid range torque


Walker Exhaust 47784 Muffler Resonator
Automotive Parts and Accessories (Walker Exhaust)


Walker Exhaust

List Price: $86.31
Price: $63.49
You Save: $22.82 (26%)

  • Genuine Walker Exhaust Part
  • Walker Exhaust 47784 Muffler Resonator

The 2009-2014 World Outlook for Exhaust System Mufflers and New Resonators for Motor Vehicles
Book (ICON Group International, Inc.)


ICON Group International, Inc.

List Price: $795.00
Price: $795.00



The 2011-2016 World Outlook for Exhaust System Mufflers and New Resonators for Motor Vehicles
Book (ICON Group International, Inc.)


ICON Group International, Inc.

List Price: $795.00
Price: $795.00



The 2009 Report on Exhaust System Mufflers and New Resonators for Motor Vehicles: World Market Segmentation by City
Book (ICON Group International, Inc.)


ICON Group International, Inc.

List Price: $795.00
Price: $795.00



The 2011 Report on Exhaust System Mufflers and New Resonators for Motor Vehicles: World Market Segmentation by City
Book (ICON Group International, Inc.)


ICON Group International, Inc.

List Price: $795.00
Price: $795.00