Exhaust Help

[Long_Voyager94]

So my Walker Quietflow muffler on the car decided to eat it's internals last night, which in turn was plugging the exhaust.

So, I removed it and replaced it with one of these I had laying around
Now the issue is....... It's obnoxiously loud.
It sounds great, but it is verging on unbearable to drive. The exhaust is full 2.5" straight from the manifold, into the Magnaflow at the rear.

Any suggestions to quiet it down/kill the resonance?
Preferably something I can throw in somewhere under the car.

[Sovande]

@long_voyager94 try a Walker Quiet Flow muffler?

[Bandit]

@long_voyager94 For a quick cheap fix can you pack that muffler with fiberglass? I also second the Walker Quiet Flow suggestion too.

[Long_Voyager94]

@sovande @Bandit Already had one. It lasted all of a year before it's internals disintegrated, looking for something "more reliable".

[ibRAD]

@long_voyager94 I haven't tried this particular muffler, but I am a fan of Borla stuff

[nerd_racing]

I put a cherry bomb glasspack in place of a resonator on one of my old proteges. It worked well with cutting noise down. Ran it in addition to a cat and muffler.

[CobraJoe]

@long_voyager94 My experience with Magnaflows is that the bigger the case, the more muffling it actually does. So, I usually go for the biggest case I can fit in the space. The one you have looks like a slightly bigger glasspack, so I'm not surprised it's loud and droning.

Overall, I find Magnaflows to be quieter at idle and louder at full throttle, and chambered mufflers (flowmasters or knock offs) to be louder at idle and quieter at full throttle. I've always wondered what it would sound like to pair them up... Either way, I'm sure the turbo style muffler you had on there will always be the quietest option.

I don't really have much experience with making an exhaust quieter without changing the sound or the muffler though, and I don't have any experience with resonators either. If you're not too attached to the exhaust pipe you have there, you could cut a section out and try out a long glasspack or a flowmaster knock off as an additional muffler just to see how it changes the sound.

[derp]

Vibrant. All day every day twice on Sundays.

Resonators:
https://vibrantperformance.com/catalog/index.php?cPath=1527_1032_1055&osCsid=21802d83f815927410ae5009fe0dbd68

Mufflers:
https://vibrantperformance.com/catalog/index.php?cPath=1527_1032_1109

[Long_Voyager94]

@nerd_racing @CobraJoe I was kinda thinking I would pickup a simple Cherry Bomb and give it a try.

I had a Flowmaster 40 with a Magnaflow pack like this on my old car, it was very loud at both idle and cruising, while sounding terrible.
For some reason these 3.0s are obnoxious with free exhaust.

@derp I will check those out, that could be a viable option as it's designed specifically as a resonator.

[derp]

@long_voyager94 vibrant mufflers have sounded great on every single thing i've heard them on.

turbo bmw, n/a and turbo honda, turbo rotary, v8, sr20det, rb26dett... i don't know what witchcraft they use, but they all sound good. I'll be running both the resonator and muffler on the race car once it gets the K.

[Urambo Tauro]

@long_voyager94 FWIW, here's a comparo of mufflers including decibal ratings that was written up for 5.0 Mustangs. It's probably sorely outdated though... http://www.mustangandfords.com/parts/m5lp-0212-ford-mustang-muffler-comparison-test/

[Long_Voyager94]

Alright boys and girls, ended up grabbing a simple Cherry Bomb to throw mid pipe as a resonator.

It's still loud, but it did the trick of killing the resonance while cruising, so I think this is the recipe. It sounds far better than it ever has as well, so I'm calling this a win.