Which Exhaust setup would be louder?

[Blk2015GT]

ok. lets just squash this. simply because the muffler body is "bigger" then your Kooks does not mean it is quieter. Corsa muffler is huge! have you seen the thing? and yes, the reason for ATAK is to be stupidly loud. "BORLA® ATAK® (Acoustically Tuned Applied Kinetics) technology is designed for high-performance purists who prefer exhaust sound over their stereos" - taken from the vendor website...
I don't care about your kooks, I don't care about what other exhaust people are running. just don't spread bull around. thank you :headbonk:

Yehhhhh the reasoning doesn't make any sense but it sounds like there is no convincing the posted he is wrong. The bullets remind me of the crap "performance" mufflers they have on display like at a Midas or Pep Boys. Regardless, they're generic so they won't be the best sounding on any car as they're not engineered or tuned for any specific vehicle. I just never understood the reasoning to buy a $30-40k car and skimp to save a whole $200-300 on the exhaust buying generic parts trying to build something.

ATAK, Corsa and Roush are the 3 loudest setups proven by users, period. Flowmaster Ooutlaws are close but drone badly so not many people run them.

The loudness topic was beat like a dead horse for months with people chiming in running numerous systems in person and using dB meters, and I think the above is the general consensus without getting into personal preferences or defending what one owns.

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[Laztug]

Yehhhhh the reasoning doesn't make any sense but it sounds like there is no convincing the posted he is wrong. The bullets remind me of the crap "performance" mufflers they have on display like at a Midas or Pep Boys. Regardless, they're generic so they won't be the best sounding on any car as they're not engineered or tuned for any specific vehicle. I just never understood the reasoning to buy a $30-40k car and skimp to save a whole $200-300 on the exhaust buying generic parts trying to build something.

ATAK, Corsa and Roush are the 3 loudest setups proven by users, period. Flowmaster Ooutlaws are close but drone badly so not many people run them.

You think I skimped on exhaust?
ARH 1 7/8 headers, ARH or/x, extra set of ARH Highflow cats just to take out my inspection sticker (thanks again jayman). I picked up the Kooks abs before I even had the car. I was expecting kooks oval ABs, but i got stuck with Kooks round. I picked them up so new vendors did not have pictures of them, which is why I made the mistake in the first place.

Three loudest setups proven how? I would really like to know, you seem to know everything that needs to be known about exhaust. Can you explain why nothing can come close to the sound of ataks? Is the secret really all in their space age sound amplifying material?

Borla Atak shouldn't really be called a "muffler" as it is designed to amplify the sound on a car with stock manifolds and catalytic converters. Corsa Extreme is more of a straight pipe with a body to assist with sound and resonance or drone. The reason people always say Atak is the loudest is due to its ability to promote sound. Both of these designs easily defy the theory that bigger casing means less sound. In the sense of what a muffler is "supposed" to do, it would make sense that bigger body means less sound. So throw out that concept when you are dealing with a performance based muffler that is designed specifically to promote sound versus reduce it. If you like loud and are keeping stock manifolds and cats, the Atak really seems to be the loudest. I am not sure about what happens when you remove the cats or change to headers in comparison with each muffler, but as stated for stock systems...Ataks are designed to be the loudest.

"Bigger muffler means a quieter exhaust" it is just a rule of thumb. It does not really apply when the manufacturer does not want to use the whole muffler to muffle sound.
Corsa xtremes have a narrow opening in the muffler to access the body. Resulting in loud / drone free exhaust. I know this
Borla (looking at their cutaway) shows the exhaust flowing into a collector with 4 internal pipes. Two have perforations, the other two are a straight shot into the back. The two pipes with perforations lead into the muffler filled with sound dampening material, to remove / reduce drone. I am sure its a loud muffler.
But not as loud as a bullet, the bullet is a single perforated pipe going through the muffler. The bullet is also filled with sound dampening material but does not have the ability to muffle sound like the larger mufflers. ie borla who is using half of their design to flow sound into the muffler.

Larger mufflers tend to be chambered which makes them quieter, I think atleast. Also, the S550 exhaust may be louder then previous gen maybe due to lack of bends over the axle like they had? Just guesses.

+1 on everything you said.
I also noticed my 15 louder than my 12.

"a general rule of thumb is, the larger a muffler is, the more quiet it will be."
quoted from you laztug. so if we go by that rule then corsa should be quit right?
now i would be interested to hear how many decibels each put out and then we can really know which is louder.
so we have Kooks Bullets, Corsa Xtreme, and Borla ATAK. i couldnt find any info for any of them regarding decibels.
*Not recommended for highly modified vehicles - that was posted on the Corsa site under the Xtreme. wonder why.

Its a general rule of thumb, which is why bullets are louder than OEM. Corsas are not designed to muffle sound with their AB5.
It would be nice to see db meters of these setups.

 

[itzqwk]

magnaflow comps:gossip:

 

[Blk2015GT]

You think I skimped on exhaust?
ARH 1 7/8 headers, ARH or/x, extra set of ARH Highflow cats just to take out my inspection sticker (thanks again jayman). I picked up the Kooks abs before I even had the car. I was expecting kooks oval ABs, but i got stuck with Kooks round. I picked them up so new vendors did not have pictures of them, which is why I made the mistake in the first place.

Three loudest setups proven how? I would really like to know, you seem to know everything that needs to be known about exhaust. Can you explain why nothing can come close to the sound of ataks? Is the secret really all in their space age sound amplifying material?

You have 529 posts you are more than capable to go search for the thread yourself. The dB tests were done by users here n a thread just like I stated with meters and their various setups. There are videos on youtube. Some of the exhaust manufacturers themselves have made videos showing the dB sound level. Surely not going to waste my time finding the information for you. But please do go on how there is some better test of volume than a decibel meter.

Anyone why actually believes this "There is no way Borla atak is going to be hands down louder than a flowmaster outlaw, magnapack, kooks round, slp bullet, muffler delete" is frankly a clown in my book with zero credibility and hasn't done an ounce of research on the topic. Try actually Googling the information you're spewing about and come back once you've actually looked it up and the tests instead of talking out your posterior.

Any save your little childish gifs since the only one lecturing about exhausts and perforations actually somehow believes the crap coming out of their mouth.

 

[TRAKDAY]

Laztug, without quoting your whole post, the only rebuttle I have for your shared perspective is that you are looking at it through the lens of "bigger body" less sound however Borla used the body like you would a musical instrument. Larger instrument, more sound! So while your smaller bullet can only make so much noise the larger body can make more noise. And remember Borla is marketed to flow more than a straight pipe. (I know I had to look at that part myself to ensure it even seemed possible). Now having said that I am not an expert however this is my interpretation of how it is/can be louder. Thoughts?

 

[Laztug]

Laztug, without quoting your whole post, the only rebuttle I have for your shared perspective is that you are looking at it through the lens of "bigger body" less sound however Borla used the body like you would a musical instrument. Larger instrument, more sound! So while your smaller bullet can only make so much noise the larger body can make more noise. And remember Borla is marketed to flow more than a straight pipe. (I know I had to look at that part myself to ensure it even seemed possible). Now having said that I am not an expert however this is my interpretation of how it is/can be louder. Thoughts?

Good to see someone else putting thought into the subject.
I took a hard look into the atak advertisement, looks like the inlet leads into a collector that expands into four larger pipes.
My guess would be if it fact it does amplify sound, It would be done in the the two straight through pipes. They could have a larger surface area where sound could be amplified (if the AB does in fact amplify sound). While the two perforated pipes are in place to disrupt the pulse of the engine and remove / reduce drone. I wish they would show us actual cutaways.

 

[Laztug]

I emailed borla about their atak axle back, here is their response.

I would think the ATAK rear section would probably be comparable in volume to one of those systems, but has been engineered to eliminate drone while cruising. Considering we engineer our systems on stock vehicles, yours may experience some drone, but I would expect it to be minimal, if at all. To be honest, I am not all that familiar with the competition’s products. I wish I could give you a better idea of the change. I can tell you that the ATAK for the 5.0 Mustang is one of the best systems I have ever heard. I am including a link for the video we made for your vehicle. Thank you.

I feel like I understand how the system works, and my final judgement is xtreme, atak , ANY bullet / competition setup will be just as loud as the next with different tones to each.

http://www.carid.com/images/borla/info/borla-sounds.html

Every atak video i saw made a horrible crackling sound under engine decel.

 

[krahooligan]

CORSA also crackles and pops. so does my S type and the older MBRP race I had. I have heard corsa with catted headers and damn. I want my car that loud, but I don't want to deal with police.

 

[Laztug]

I am glad police here are very laid back understanding people.

Are you just running aftermarket abs?

I haven't noticed any crackling out of my exhaust, I will pay more attention to it next time out.

 

[krahooligan]

I am running the FRPP by borla sport catback with the black tips.
its been unusually poppy lately. especially if I ride 1st gear out past 3k rpm. and on downshifts its been popping. I kinda like it.

 

[beefcake]

are you looking for loud?

stainless works LMF mufflers.....

 

[RootinTooter]

You forgot the Corsa Extreme bro ;) lol everybody tells me its loud as hell and they think I have hearders, best mod ive done yet. I spent almost 2 months researching and hearing almost all exhaust until I decided to go with the corsa extreme.

That sounds REALLY good. I'm partial to extremely loud vehicles. I run 3" straight pipe after the cats with an H pipe.

 

[rio16]

KOOKS o/r and CORSA CATBACK double X pipe "loudest" =)

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[krahooligan]

thanks Rio. Ha. we all know your cars loud AF!!!!

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