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Discussion Starter #1 (Edited)
OK, I know there are many posts about exhausts, but here is mine. I bought the 300C last Thursday and I found a Muffler shop that would do a custom cat back with Magnaflows for $400.00. They did a great job, I asked them to set them back as far as possible and they said they stick out a little so they don't burn the car.

The exhaust sounds awesome when you start the engine. When you pull away slowly, again sounds great just enough growl. Now the problem at 1/5 to 1/3 gas usually just over :AR15firin 2K RPM it is a little too loud for my taste. Then again when you get to a cruising speed on the highway there is just enough to know there is an aftermarket exhaust there.

So, if I find the need is there an easy way to get the 1800-2200 PRM noise reduced? I did not have enough time to call them after I drove it...

I have not posted any pics of my ride as of yet, I did not see the need to show a car that you could find on the lot of you local 5 star dealer! Below are a few pics, please no pot-shots about the dirt. I know I know, I need a wash badddddd.

My next mod is wheels and I just can't seam to find a wheel that blows my hair back. I will post many pics as soon as I add the wheels.
 

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Did you only replace the factory rear mufflers or did you have them remove the mid-body muffler?

Todd
 

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I have the Flowmasters ; I added a 12" glasspack,installed just before Exhaust Tips...
Sounds Great !!!
 

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Discussion Starter #4
Lik2race said:
I have the Flowmasters ; I added a 12" glasspack,installed just before Exhaust Tips...
Sounds Great !!!
What the F is a 12" glasspack? Will the muffler guy know what I mean when I ask him for them?
 

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HEMI4ME? said:
OK, I know there are many posts about exhausts, but here is mine. I bought the 300C last Thursday and I found a Muffler shop that would do a custom cat back with Magnaflows for $400.00. They did a great job, I asked them to set them back as far as possible and they said they stick out a little so they don't burn the car.

The exhaust sounds awesome when you start the engine. When you pull away slowly, again sounds great just enough growl. Now the problem at 1/5 to 1/3 gas usually just over :AR15firin 2K RPM it is a little too loud for my taste. Then again when you get to a cruising speed on the highway there is just enough to know there is an aftermarket exhaust there.

So, if I find the need is there an easy way to get the 1800-2200 PRM noise reduced? I did not have enough time to call them after I drove it...

I have not posted any pics of my ride as of yet, I did not see the need to show a car that you could find on the lot of you local 5 star dealer! Below are a few pics, please no pot-shots about the dirt. I know I know, I need a wash badddddd.

My next mod is wheels and I just can't seam to find a wheel that blows my hair back. I will post many pics as soon as I add the wheels.
Give me an idea of what your under body configuration looks like and which mufflers you had installed. If you dont know part numbers, let me know where the inlets and outlets are and hte dimensions of the muffler. The resonance frequency of most late model V8s are worst at 1800-2200 while cruising (low throttle position and in 1:1 or OD.) A few things can help eliminate that. Is the "noise" most prevelant in 4cyl mode or normal cruise?
 

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HEMI4ME? said:
What the F is a 12" glasspack? Will the muffler guy know what I mean when I ask him for them?
I believe he has two aftermarket muffler in the mid body position and has put two resonators in the stock rear muffler position. A muffler shop should understand what a "glasspack" is. (Bullet shapped straight through narrow body muffler)
 

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Discussion Starter #7 (Edited)
WhiteDiamond said:
Did you only replace the factory rear mufflers or did you have them remove the mid-body muffler?

Todd
They said they did a Cat back? I will see if I can take a pic will you know then?
 

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Discussion Starter #8 (Edited)
More pictures...
 

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HEMI4ME? said:
What the F is a 12" glasspack? Will the muffler guy know what I mean when I ask him for them?
Just a plain 'ol Cherry Bomb glasspack;He should
know what they are,been around for years
.
 

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It appears that you have the mid-body muffler completely removed and replaced by two Magnaflow mufflers. You don't include a good picture of the very rear section of the pipes before the tips, but from the one picture, it appears there is no muffler just before the tips now.

btlfed1500 is the man to talk to. I believe the Magnaflow systems include a mid-body flow through resonator and then two mufflers at the tips, one on each side. They probably do this for the very reason you are experiencing, to reduce those harmonics at that rpm range.

I have the exact resonance in a Dodge Hemi Ram with just one very large Magnaflow SS muffler. I added another smaller muffler in the rear of the system, a little like stock, and got rid of the resonance and kept most of the great sound.

Todd
 

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Discussion Starter #11
Nothing in the back at all like you thought...
 

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Drop btlfed1500 a PM or wait for his reply. I am guessing he will recommend a little different setup for you to get rid of the resonance.

Todd
 

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HEMI4ME? said:
Nothing in the back at all like you thought...
That image shows the shop did not use the last hangers ... that is not good for controlling harmonics .. but allowing that system to hang free you can basically count on amplifing noise or potential vibration.
 

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Discussion Starter #15
I called the Muffler guy, he wants $120 to install the resonators, he says his are about 13" long. Also he asked me if I wanted to use the ones that came with the car? What is the best idea here?
 

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I have been reading many posts left by members complaining of their aftermarket exhausts whether it be Zoomers, Borla etc. If you want the louder and perhaps better sound than what you are hearing from the factory setup then go ahead and do the mod and stop the whining that it's now too loud. I have seen as many people moaning and groaning as I have seen praise from those that love the mod. Are some of you that stupid to go ahead and cut the factory system out without 1st listening to what you're about to install?? I've seen atleast 3 sets of pipes for sale on this site from members who just can't handle the sound. If some of the members wanted the look and sound of the SRT8, they should have bought one. Stop installing these fart cans on and leave the exhaust the way it was meant to be. What I enjoy with the C is that its extremely understated and should remain that way without any outrageous body kits, spoilers or other rediculous mods that ruin what the 300C is all about. A nice set of wheels, grill and perhaps a few additional subtle items is all you need for one hell of a ride without looking like a total jerk who just draws the wrong attention and is going to be the target off all sorts of jealous folks just waiting to drag a key along side the car.
 

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Discussion Starter #17
Hemi-Roid said:
I have been reading many posts left by members complaining of their aftermarket exhausts whether it be Zoomers, Borla etc. If you want the louder and perhaps better sound than what you are hearing from the factory setup then go ahead and do the mod and stop the whining that it's now too loud. I have seen as many people moaning and groaning as I have seen praise from those that love the mod. Are some of you that stupid to go ahead and cut the factory system out without 1st listening to what you're about to install?? I've seen atleast 3 sets of pipes for sale on this site from members who just can't handle the sound. If some of the members wanted the look and sound of the SRT8, they should have bought one. Stop installing these fart cans on and leave the exhaust the way it was meant to be. What I enjoy with the C is that its extremely understated and should remain that way without any outrageous body kits, spoilers or other rediculous mods that ruin what the 300C is all about. A nice set of wheels, grill and perhaps a few additional subtle items is all you need for one hell of a ride without looking like a total jerk who just draws the wrong attention and is going to be the target off all sorts of jealous folks just waiting to drag a key along side the car.


:grumpy:


UHMMMM... OK
 

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Hemi-Roid said:
I have been reading many posts left by members complaining of their aftermarket exhausts whether it be Zoomers, Borla etc. If you want the louder and perhaps better sound than what you are hearing from the factory setup then go ahead and do the mod and stop the whining that it's now too loud. I have seen as many people moaning and groaning as I have seen praise from those that love the mod. Are some of you that stupid to go ahead and cut the factory system out without 1st listening to what you're about to install?? I've seen atleast 3 sets of pipes for sale on this site from members who just can't handle the sound. If some of the members wanted the look and sound of the SRT8, they should have bought one. Stop installing these fart cans on and leave the exhaust the way it was meant to be. What I enjoy with the C is that its extremely understated and should remain that way without any outrageous body kits, spoilers or other rediculous mods that ruin what the 300C is all about. A nice set of wheels, grill and perhaps a few additional subtle items is all you need for one hell of a ride without looking like a total jerk who just draws the wrong attention and is going to be the target off all sorts of jealous folks just waiting to drag a key along side the car.

funhater! :banana: :banana:

as far as exhaust goes...yes, if u want the smooth quiet stock sound, then by all means dont go aftermarket(seems kinda obvious). but for me...i like my shiny tips and the growl of the hemi. i bought a hemi, i wanted to hear a hemi. and now i do :) i can completely understand those that wish to keep the stock exhaust though as well. something to be said for the classy quiet powah of the stock c. my zoomers setup has settled into a nice mellow rumble at lower speeds, not too obnoxious at all, but push the hemi and the beast really comes out. i havent heard enough of borlas or magnaflows in a C to comment.
 

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I'm glad you enjoy your Zoomers and am glad to all those that do. Again, it's those crying babies that have it installed and then have to whine about what they've done to their 300s and wish they kept what they had.
 

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ok guys.........this post just ruined my day. well sorta.

i plan on taking my car in within the next couple weeks for the 'poor man's exhaust upgrade'. i was going to leave the middle suitcase and just have them weld new tips on the end (remove the resonators), but after reading this now wonder if i should.

or should i...take out the middle 'suitcase', leave the rear resonators on and have them just weld tips to them?

im still very confused about the glasspacks, as ive heard of them but really never had any experience with them. you guys think i should add 2 of these in the rear? what do they even do?!?

i also want to add dual outlet tips to each muffler. ive been having trouble locating some that will fit our cars and look nice. should i be looking for a 3" or a 2.75"?!?!? i think PixelPusher has the quad tips like im talking about (correct me if im wrong) and just wanted some peoples opininons on what i should do.

PLEASE HELP ME GUYS! I dont want something that is sort of loud, but not too 'fart pipe' like, while still preserving the mean rumble of the V8 HEMI. Im cant make a decision as of right now without some quality imput and dont want to ruin the sound of my C!
 
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